外研版（2019） 必修 第二册 Unit 6 Earth first 单元测评（word版含答案）

Unit 6 Earth first
第二部分 阅读（共两节，满分50分）
第一节（共15小题；每小题2.5分，满分37.5分） 阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
Ballet Shoes
by Noel Streatfeild
(Nosy Crow)
This classic story introduces the Fossil sisters — Pauline, Petrova and Posy. At Madame Fidolia's school in London, the three sisters learn all the skills they'll need for a career on the stage. Posy is a wonderful dancer and Pauline shines at acting, but Petrova's talents lie in a very different direction ...
No Ballet Shoes in Syria
by Catherine Bruton
(Chicken House)
In this award-winning book, Aya and her family have just arrived in Britain, looking for asylum ( 避难所) from the war in Syria. When Aya discovers a local ballet class, the teacher notices her talent at once, but how can Aya follow her dream of ballet when her family has to fight to stay in the country This is a wonderful story of friendship and wonderful performances.
Dance Dreams
by Malaika Rose Stanley
(Tamarind)
Thirteen-year-old Keisha is excited to have the chance to join the Birchwood School for Dance, although following her dreams isn't going to be easy. Going to Birchwood will mean leaving behind her best friends. Is Keisha's dance dream about to turn into a bad dream
The Nutcracker and Other Stories
by Emma Adams
(Puffin Books)
Discover the attractive story behind some of the most famous ballets of all time, including “The Nutcracker”, “Swan Lake” and “Sleeping Beauty”. With six beloved ballet stories, this beautiful summary makes for the most wonderful gift — whether you're a reader, a dreamer or a dancer.
21. Which of the following books tells a story about three girls
A. The Nutcracker and Other Stories.
B. No Ballet Shoes in Syria.
C. Dance Dreams.
D. Ballet Shoes.
22. What do No Ballet Shoes in Syria and Dance Dreams have in common
A. They both are friendship-related.
B. They both describe the cost of war.
C. They both are printed by the same company.
D. They both introduce the Birchwood School for Dance.
23. Whose book collects different stories
A. Emma Adams'.
B. Noel Streatfeild's.
C. Catherine Bruton's.
D. Malaika Rose Stanley's.
B
“Will they be bothered ( 打扰) by our presence ”; “They're so big and look so dangerous. How are we going to feel once we're in the water ” These are just some of the questions in our minds before cameraman Nick Porter and I set out to film whale sharks, the largest living fish, off the coast of Qatar.
I have always been passionate about wildlife. When I was a child, I wanted to be a marine biologist (海洋生物学家) but somehow ended up becoming a reporter. Now I am in Qatar and finally I have a chance to tell the story of the rich wildlife of Qatar, including the whale sharks.
After long and careful planning, we start the two-hour trip out to sea. Finally, we see them. There are hundreds. More and more of the harmless giants ( 巨物) surface with their mouths wide open as they skim (掠过) the top of the sea.
It's time to join them. Nick and I jump into the water. Neither of us is nervous. I notice one and swim towards it, forgetting that Nick still doesn't have fins on his feet, so he can't really swim as fast as I can. But right now, I just want to be close to this unbelievable animal.
So I end up alone, next to a huge whale shark — huge compared with me, at least. This one is probably six or seven metres long, but they can get much bigger. There is so much to take in. Being so close for the first time, I get quite emotional.
Nick has now gotten his fins, and we swim together. He is filming and is as excited as I am.
After two hours, we return to the boat. Everyone is on a high. Whale sharks are endangered — unsurprisingly, mostly by human activities. They need more protection. The more people know about the beauty we have a privilege (荣幸) to host, the more we will want to protect it. It's a privilege we should all work together to protect.
24. What does the author want to do in Qatar
A. Record whale sharks.
B. Take up a swimming course.
C. Work with a marine biologist.
D. Do some research on wildlife.
25. What do the underlined words “passionate about” in paragraph 2 mean
A. Aware of.
B. Satisfied with.
C. Frightened of.
D. Interested in.
26. Why does the author swim alone at first
A. His partner isn't fully prepared.
B. His partner is too nervous to swim with him.
C. He doesn't want to be bothered by his partner.
D. He is less skillful at swimming than his partner.
27. What is the author's purpose in writing this text
A. To introduce whale sharks.
B. To invite people to travel in Qatar.
C. To call on people to protect wildlife.
D. To show his great love of whale sharks.
C
This week, Parisians have been treated to the sight of ecotaxis, transporting people up and down the river Seine. They are called SeaBubbles and are being tested ahead of the decision to introduce them into the Parisian transport network. The SeaBubble is still in its early testing period, using technological know-how from several industries. The boat sits in the water as the passengers get on and off but once the door is closed the boat starts moving at 12 kmh (7.5 mph) along the surface. It is 100% electric.
The foils ( 箔) they use are not new technology; they date back to 1898 and an Italian engineer called Enrico Forlanini. The Germans tested foil boats in the 1940s, the first hydrofoil ferry ( 水翼渡船) was used between Switzerland and Italy in the 1950s and by 1965, a hydrofoil boat was good enough for the James Bond baddie in Thunderball. What has changed, however, is the technology, which has improved to the point where it can now succeed in dealing with some of the shortcomings which prevented their widespread use.
The company has big goals; it wants to use the world's waterways — and not roads — to transport people from A to B, and it wants to do so with “zero wave, zero emission ( 排放), zero noise.” The SeaBubbles would travel at the same speed as cars and the goal is to provide these at the same cost as a taxi, with customers ordering them through an app as they would an Uber.
Anders Bringdal, SeaBubbles CEO, told Associated Press that he hopes to change the way people move about cities. SeaBubbles are one more example of how shared public transport can change the mobility of large cities, much like shared bikes are now doing. People are increasingly looking to rivers as a means of moving around large cities to compete with the subway or buses — in London, travel cards are now accepted on river boats.
28. What do we know about the SeaBubble
A. It has been used in Paris.
B. It moves as fast as a car.
C. It is under water when it moves.
D. It uses knowledge from other industries.
29. Why did the author list the events about foils in paragraph 2
A. To give special importance to the breakthrough of foils.
B. To explain the reasons for creating the SeaBubble.
C. To point out the disadvantages of foils.
D. To show how the SeaBubble works.
30. What is the company's future plan
A. To put traditional taxis out of business.
B. To work with Uber to transport more people.
C. To transport people on waterways worldwide.
D. To make environment-friendly inventions at low prices.
31. What can we infer about the SeaBubble from the last paragraph
A. It may have an important place in public transport.
B. It has been widely accepted by many countries.
C. It will make the company world-famous.
D. It still needs more tests.
D
In Copenhagen, I travel everywhere by bicycle. Here, cycle lanes are safe, separated from the road. The city's cycle network is praised by the whole world.
Copenhagen's city government reported in 2019 that 62% of its citizens are now commuting ( 通勤) to work or school by bike — an increase from 52% in 2015 and 36% in 2012, when the city started a 14-year plan to improve the quality, safety and comfort of cycling. Those bikers ride about 800, 000 miles a day. According to local reports, there are more bikes (675, 000) than people in Copenhagen, and five times as many bicycles as cars.
The three-hour cycling trip is saving me 1.1kg of CO2 compared to a bus tour. We arrive at Tivoli Gardens, built in 1843. The world's second-oldest funfair is doing its bit to protect the environment, with measures including charging visitors extra ( 向游客额外收费) and providing reusable drinking cups, a move that has saved 10 tons of waste per year. Other parks across the world, I think, may consider following suit.
The next day, I avoid adding a further 2.4kg to my footprint by experiencing Copenhagen's canals (运河) by electric GoBoat rather than an engined boat.
“We're not 100% carbon-neutral ( 碳中和的) as this would require us to put in more money and we're a new company,” says GoBoat co-founder Kasper Eich-Romme. “But our boats are usually packed with eight people — the greatest number, while traditional canal tours run CO2-costly boats that could fit 100 - plus people, sometimes with only 5-10 people on board.”
Finding hotels that are reducing carbon use is becoming ever easier, too, especially in Copenhagen, where 70% are eco-certified ( 生态认证的). Hotel Kong Arthur, a stately building facing Copenhagen's lakes, is among those leading the charge. It has been carbon-neutral since 2007 and employs simple touches to help guests play their part: there's no air conditioner — instead, rooms are cooled simply by opening the windows.
32. What do the numbers in paragraph 2 show
A. The difficulty of starting a 14-year plan to improve cycling.
B. The difference between commuting by bicycle and by car.
C. Copenhagen's great achievement in developing cycling.
D. People's change of attitude to the advantages of cycling.
33. What does the author think of the funfair's measure of charging extra
A. It works very well.
B. It wastes a lot of money.
C. It causes a fall in the number of visitors.
D. It does little to protect the environment.
34. What do we know about the GoBoat
A. It is powered by an engine.
B. It is environment-friendly.
C. It is space-saving.
D. It is rather costly.
35. How is the last paragraph developed
A. By providing explanations.
B. By following space order.
C. By making comparisons.
D. By giving an example.
第二节（共5小题；每小题2.5分，满分12.5分）
阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。
You can help protect the planet! Try some of the following tips and get green.
36 Set out cans and bottles for neighborhood pickup, or exchange them for cash at a recycling ( 回收利用) center. Choose rechargeable batteries ( 充电电池), then recycle them when they die. 37 Sharing books is a great way to reduce waste and reuse materials.
Improve the outdoors. Plant a leafy tree that loses its leaves in fall on the south side of your home. Its shade ( 树荫) will cool your house in the summer. 38 Trees also help clean the air we breathe. They produce oxygen and reduce carbon dioxide.
Don't litter. Rubbish thrown carelessly outside often washes into rivers, lakes and finally into the oceans. 39
Cut down on waste. If you have a dripping faucet (滴水的水龙头) in the house, ask your parents to replace the washer inside it. If you stop a faucet from leaking one drop each second, you can save 2, 700 gallons of water a year. Don't pile (堆满) food onto your plate. 40 Enough food to feed 49 million people ends up in landfills in the United States each year.
A. Recycle and reuse first.
B. Participate in clean-up days at a park.
C. Take only what you know you'll really be able to eat.
D. Pollution is a growing problem for all the Earth's oceans and wildlife.
E. Borrow books from the library or a friend instead of buying a new copy.
F. After the tree's leaves fall, sunlight will help warm your house in the winter.
G. Most garbage collection services will pick up your recycled bottles and cans.
第三部分 语言运用（共两节，满分30分）
第一节（共15小题；每小题1分，满分15分）
阅读下面短文，从每题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。
One day in 2012, David and Pam Brennan were walking on the shore ( 岸) near their house in Brunswick, Maine. Then they 41 a seal (海豹) that seemed to be stranded ( 搁浅的 ). They were 42 because the tide (潮汐) went out and came back in, and the seal was 43 there.
Their first 44 was to Marine Mammals of Maine (MMoME), an organization that runs a 24-hour hotline, dealing with calls about stranded sea animals. 45 , a volunteer arrived. While the seal turned out to be 46 and just resting, the experience encouraged the Brennans to 47 .
Within a year, the two had completed volunteer 48 . They learned how to tell a stranded seal and studied the rules governing seal handling. When it was 49 for their first seal rescue, they were 50 . “As soon as MMoME made sure that a baby seal had been abandoned (被遗弃的) and that the mother wasn't 51 , we knew what we had to do,” says Pam.
“We have transported many a seal in our car. Those rides are kind of fun and also a little 52 ,” David says. “Seals are easily stranded in June, so it might be warm outside, but you have to keep the seals 53 . So the car's air conditioner runs and the windows are up and the car smells like a seal.”
“We feel a great responsibility to 54 these animals,” Pam says. “And really, this is what we were put on this Earth to 55 .”
41. A. saved B. remembered C. saw D. held
42. A. careful B. excited C. thankful D. concerned
43. A. once B. still C. almost D. even
44. A. visit B. advice C. call D. attention
45. A. Soon B. Suddenly C. Again D. Clearly
46. A. healthy B. shy C. funny D. lazy
47. A. take place B. take part C. lose interest D. lose heart
48. A. form B. work C. treatment D. training
49. A. reason B. hope C. time D. possibility
50. A. ready B. surprised C. nervous D. safe
51. A. showing off B. coming back C. running away D. staying up
52. A. dangerous B. crazy C. uncomfortable D. short
53. A. free B. awake C. busy D. cool
54. A. own B. help C. like D. prevent
55. A. keep B. live C. accept D. do
第二节（共10小题；每小题1.5分，满分15分）
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
With forests and grasslands burning across the planet, the 56. ________ (important) of forests has come back into the world's focus. China has become the recognized leader in the greening of degraded (退化的) grasslands 57. ________ deserts, as proved by a number of 58. ________ (award). In December 2019, the United Nations recognized China's Ant Forest Program as Champions of the Earth.
Ant Forest uses technology 59. ________ (encourage) green behavior in users of China's popular Alipay platform. Through this APP, customers can collect “green credit” for actions 60. ________ save carbon emission or energy. As soon 61. ________ enough credit is collected, the company will plant a real tree.
China's efforts have made the country the largest contributor in the global greening area. In 2019, forests 62. ________ (plant) in an area of 70.67 billion square meters. The national forest coverage rate reached 22.96%. China's example 63. ________ (clear) shows the impact that an alliance ( 联合) of government, company, financing and local communities can have if all pull together to work on a common goal. These 64. ________ (success) cases have been studied for possible emulation ( 仿效) by other countries 65. ________ (affect) by expanding ( 扩张) deserts, such as Pakistan, Sudan or Niger.
第四部分 写作（共两节，满分40分）
第一节（满分15分）
假定你是李华，是某国际学校的学生会主席。为了提高学生保护校园环境的意识，请你代表学生会写一份倡议书，并发布在校英文网站上，内容包括：
1. 说明保护校园环境的重要性；
2. 提出建议。
注意：写作词数应为80左右。
_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________第二节（满分25分）
阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。
The day of the balloon festival, I felt as light as a hot-air balloon. This year, I wouldn't just be watching. I would be riding in Mr. Brown's truck, following the flight of the balloon and meeting it when it came down.
It was a perfect day. Dad and I drove down the road, looped around the lake, and turned into the field that was being used as a parking area. Dad pointed toward the lake. “That's where you'll find Mr. Brown's truck,” he said.
We stopped and got out of the car. And then I saw it — a white bird with a brown head and skinny legs. It cried and thrashed (激烈扭动) in the dirt in front of the cars that were driving downhill. Its wing looked broken. Suddenly it flew off.
“Dad!” I called. But my dad was watching the balloons.
“It has a nest (鸟巢) here somewhere,” a voice said.
I turned to see an old woman. “I'm Edie Thomas,” she said.
“I'm Nat,” I said. She shook my hand as if I were someone important.
Mrs. Thomas smiled. “It was a nesting place before it became a parking area. No one told the bird about the balloon festival.” Then she pointed with her cane (手杖). On the ground was a perfect clutch of eggs, looking like a heap of pebbles (鹅卵石). They were in the path (路线) of cars, trucks and motorbikes.
Screech. The parent bird was back, its wing all twisted again.
“They pretend to be wounded,” said Mrs. Thomas. “They lead enemies off, miles sometimes, before flying back. Those eggs sit there pretending to be rocks.”
“ Nat! ” Dad called. “ Isn't it time you went down to see Mr. Brown ”
“Dad! I'm —”
I looked at the lake. The balloons were ready. Mr. Brown's truck was there, ready to go.
A bird cry forced me to look back. I felt as if I had a rock in my stomach. “Dad, I'm not going.”
“You're sure ”
注意：
1. 续写词数应为150左右；
2. 请按如下格式在相应位置作答。
“I can't,” I said. “I have to stay here so cars don't run over the nest.” ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________All morning Mrs. Thomas and I watched balloons fly across the sky. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
参考答案
21-25 DAAAD 26-30 ACDAC 31-35 ACABD 36-40 AEFDC
41-45 CDBCA 46-50 ABDCA 51-55 BCDBD
56. importance 57. and 58. awards 59. to encourage
60. that / which 61. as 62. were planted 63. clearly
64. successful 65. affected
写作
第一节
One possible version:
Dear fellow students,
The school is our second home where we spend much time with teachers and classmates. A green campus not only makes us healthy but also benefits our studies.
Therefore, it's our duty to work together to protect the campus environment. First, take good care of the trees and flowers on campus. Second, don't drop litter carelessly and pick up litter you find. What's more, protect the public facilities on campus.
Only by our joint efforts will we make the campus a greener, cleaner place.
Student Council
第二节
One possible version:
“I can't,” I said. “I have to stay here so cars don't run over the nest.” Dad gave me a funny look. “I'll go tell Mr. Brown.” “If I can protect the nest today, it'll be OK, right ” I asked Mrs. Thomas. “No one parks here except for the balloon festival,” she said. We threw ourselves into the job of guarding those eggs. I raised my arms to signal to the drivers of the cars and Mrs. Thomas gave patient explanations. Soon a ring of cars surrounded the nest. Nothing coming down the hill was going to get those eggs.
All morning Mrs. Thomas and I watched balloons fly across the sky. Another white bird with an olive-brown head — the male — flew down. The first one left. “To eat,” said Mrs. Thomas. The male settled in, keeping an eye on us. Around noon, the festival was over. People began to leave. When Dad came back, only Mrs. Thomas and I were left. And one bird, watching over the four eggs in a nest — perfectly safe. I'd missed Mr. Brown's truck, but I didn't regret it at all.
部分解析
阅读
第一节
A篇
主题语境：人与自我——生活与学习
本文是应用文。文章介绍了和芭蕾有关的四本书。
21. D。细节理解题。根据Ballet Shoes介绍内容中的This classic story introduces the Fossil sisters — Pauline, Petrova and Posy可知，Ballet Shoes讲述了发生在三姐妹之间的故事。
22. A。细节理解题。根据No Ballet Shoes in Syria介绍内容中的This is a wonderful story of friendship and wonderful performances和Dance Dreams介绍内容中的Going to Birchwood will mean leaving behind her best friends可知，这两本书都是和友谊相关的。
23. A。细节理解题。根据The Nutcracker and Other Stories介绍内容中的Discover the attractive story behind some of the most famous ballets of all time, including “The Nutcracker”, “Swan Lake” and “Sleeping Beauty”. With six beloved ballet stories可知，由Emma Adams编写的The Nutcracker and Other Stories是一本故事集。
B篇
主题语境：人与自然——环境保护
本文是记叙文。作者通过讲述自己拍摄鲸鲨的经历，呼吁人们要保护鲸鲨。
24. A。细节理解题。根据第一段中的These are just some of the questions in our minds before cameraman Nick Porter and I set out to film whale sharks, the largest living fish, off the coast of Qatar可知，作者在卡塔尔想和同伴一起拍摄鲸鲨的短片。
25. D。词义猜测题。根据第二段中的When I was a child, I wanted to be a marine biologist及finally I have a chance to tell the story of the rich wildlife of Qatar, including the whale sharks可知，作者一直对野生生物很“感兴趣”，所以小时候才想成为一名海洋生物学家，长大后有机会拍摄野生生物才会那么激动。
26. A。细节理解题。根据第四段中的I notice one and swim towards it, forgetting that Nick still doesn't have fins on his feet, so he can't really swim as fast as I can可知，作者的伙伴Nick没有穿戴好游泳设备，所以他决定先自行观察鲸鲨。
27. C。写作目的题。根据最后一段中的Whale sharks are endangered — unsurprisingly, mostly by human activities. They need more protection. The more people know about the beauty we have a privilege to host, the more we will want to protect it. It's a privilege we should all work together to protect可知，作者通过讲述此次经历，呼吁人们要保护鲸鲨。
C篇
主题语境：人与社会——科学与技术
本文是说明文。文章介绍了水上行驶、类似于出租车的环保船。
28. D。细节理解题。根据第一段中的The SeaBubble is still in its early testing period, using technological knowhow from several industries可知，SeaBubble借鉴了其他行业的技术和经验。
29. A。细节理解题。作者在第二段列举了箔在不同历史时期的发明创造，目的就是突出下文中的What has changed, however, is the technology, which has improved to the point where it can now succeed in dealing with some of the shortcomings which prevented their widespread use这一部分，指出现在的箔技术已经突破了诸多瓶颈。
30. C。细节理解题。根据第三段中的The company has big goals; it wants to use the world's waterways — and not roads — to transport people from A to B可知，该公司的目标是希望在世界范围内开展水上运送乘客的服务。
31. A。推理判断题。根据最后一段可知，人们希望改变当前城市的出行方式，将水运纳入城市公共交通体系。由此可以推测，SeaBubble可能在未来的公共交通领域占有一席之地。
D篇
主题语境：人与自然——环境保护
本文是说明文。哥本哈根在实现碳中和方面取得了显著成就。
32. C。推理判断题。根据第二段内容可知，这些数字都是用来说明哥本哈根在推动骑行方面取得的重要成就。
33. A。推理判断题。根据第三段中的The world's secondoldest funfair is doing its bit to protect the environment, with measures including charging visitors extra and providing reusable drinking cups, a move that has saved 10 tons of waste per year. Other parks across the world, I think, may consider following suit可知，作者认为这家游乐场的收费措施是实现碳中和的有效手段。
34. B。推理判断题。由第五段中的We're not 100% carbon - neutral as this would require us to put in more money and we're a new company以及But our boats are usually packed with eight people — the greatest number, while traditional canal tours run CO2costly boats that could fit 100plus people可推测，GoBoat是环保型的小船。
35. D。写作手法题。最后一段首句Finding hotels that are reducing carbon use is becoming ever easier, too, especially in Copenhagen, where 70% are eco-certified为本段中心句，指出哥本哈根的酒店大部分都是环境友好型的，之后以Kong Arthur为例，说明了酒店为保护环境采取的具体措施。
第二节
主题语境：人与自然——环境保护
本文是说明文。文章介绍了如何从小事做起保护地球。
36. A。本句为本段的中心句。根据下文中的neighborhood pickup、exchange them for cash at a recycling center和Choose rechargeable batteries, then recycle them以及Sharing books可知，作者在本段主要建议读者保护地球首先从回收再利用做起。A项中的Recycle与下文中的recycling以及recycle是原词复现关系，同时A项中的reuse与下文中的reuse也是原词复现关系。
37. E。根据下文中的Sharing books is a great way to reduce waste and reuse materials可知，作者在此处建议读者分享图书，减少购买新书的次数。E项中的Borrow books from the library or a friend与下文中的Sharing books相照应。
38. F。根据上文中的Plant a leafy tree that loses its leaves in fall on the south side of your home可知，作者在此处介绍在家附近种树的好处。F项中的warm your house in the winter与上文中的cool your house in the summer形成对比。
39. D。根据本段的中心句Don't litter可知，作者在本段主要介绍乱扔垃圾的危害。D项中的Pollution和all the Earth's oceans分别与上文中的Rubbish thrown carelessly和finally into the oceans相照应。
40. C。根据本段的中心句Cut down on waste可知，作者在本段建议读者拒绝浪费。根据上文中的Don't pile food onto your plate和下文中的Enough food to feed 49 million people ends up in landfills可知，作者在此处关注食物浪费的现象并且建议读者杜绝食物浪费。
语言运用
第一节
主题语境：人与自然——环境保护
本文是记叙文。文章讲述了一对志愿者夫妇致力于救助搁浅的海豹的故事。
41. C。文章首句提到Brennan夫妇当时正在岸边漫步，结合下文的描述可知，他们发现一只海豹，它好像搁浅了。设空处所填的词应该表示“发现”或“看到，注意到”，故选saw。
42. D。43. B。由上文中的a seal that seemed to be stranded及下文中的a volunteer arrived. While the seal turned out to be ... and just resting可知，他们觉得海豹搁浅了，于是采取了求助措施。再结合本句中的because the tide went out and came back in可知，此处表示潮水退了又涨，海豹“仍然（still）”一动不动地待在那里，因此，他们有些“担心（concerned）”。
44. C。下文中的an organization that runs a 24hour hotline, dealing with calls about stranded sea animals及a volunteer arrived可提示此处选择call。
45. A。由上文可知，Brennan夫妇打了求助电话。结合当时的情景可知，此处应该表示一个志愿者很快就来到了现场，故选Soon。
46. A。该空后的and just resting可说明海豹并没有搁浅，也就是说，它没有面临危险。四个选项中，只有healthy（健康的）符合语境。
47. B。由下文的描述可知，从那次的事件（指Brennan夫妇误以为一只休憩的海豹搁浅了）之后，Brennan夫妇开始致力于救助搁浅的海豹，take part（参与）符合语境。
48. D。由上文的描述可知，那只海豹只是在海岸上休憩，而Brennan夫妇误以为它搁浅了。这说明他们不会判断海豹是在休息还是搁浅了。结合下文中的They learned how to tell a stranded seal and studied the rules governing seal handling可知，在一年的时间里，他们学会了如何判断海豹是否搁浅。设空处所填的词应该与“学习”具有相同或相近的含义，四个选项中，只有training（培训）符合语境。
49. C。50. A。由下文中的As soon as MMoME made sure that a baby seal had been abandoned及we knew what we had to do可知，当需要实施第一次救援工作的“时刻（time）”到来时，他们早已做好了“准备（ready）”。
51. B。由上文中的their first seal rescue及a baby seal had been abandoned可知，他们确定小海豹被遗弃了，并且决定救助它。由此可推断，小海豹的妈妈将不会回来，故选coming back。
52. C。由下文中的the car smells like a seal可推断，他们开车运送海豹的途中会感到有些“不适（uncomfortable）”。
53. D。本句中的it might be warm outside及but和下文中的So the car's air conditioner runs可提示此处表示得确保海豹凉快，故选cool。
54. B。55. D。由上文可知，Brennan夫妇俩做志愿工作，致力于救助搁浅的海豹。由此可推断，此处表示他们觉得自己有责任“帮助（help）”这些动物，并且他们认为自己生来就应该“做（do）”这些事。此处解释了Brennan夫妇为什么选择致力于救助搁浅的海豹，升华了主题。
第二节
主题语境：人与自然——环境保护
本文是说明文。中国植树造林取得瞩目成绩。
56. importance。考查名词。根据空前的the以及空后的of可知，设空处填名词，作句子的主语，表示“重要性”，故填importance。
57. and。考查连词。根据语境可知，此处“草原”和“沙漠”之间为并列关系，表示绿化退化的草原和沙漠，故填连词and。
58. awards。考查可数名词的复数。award意为“奖；奖项”，为可数名词，根据空前的a number of可知，此处表达复数意义，故填awards。
59. to encourage。考查动词不定式作目的状语的用法。设空处作目的状语，故填to encourage。use sth. to do sth. 使用某物做某事。
60. that / which。考查关系代词。设空处引导限制性定语从句，指代先行词actions，且在从句中作主语，故填that或者which。
61. as。考查固定搭配。as soon as ... 一……就……。
62. were planted。考查一般过去时被动语态。根据上文中的In 2019可知，此处描述的是发生在过去的事情，用一般过去时，且句子主语forests与动词plant之间为被动关系，故填were planted。
63. clearly。考查副词。设空处作状语，修饰动词shows，用副词，故填clearly。
64. successful。考查形容词。设空处作前置定语，修饰名词cases，用形容词，表示“成功的”，故填successful。
65. affected。考查动词-ed形式作定语的用法。设空处作后置定语，修饰名词countries，且逻辑主语countries与动词affect之间为被动关系，故填affected。