外研版（2019）必修 第二册Unit 6 Earth first Developing ideas&Presenting Ideas课时作业（含答案）

Unit 6 Developing ideas&Presenting Ideas
一、单词拼写
1.Floods and _____(旱灾) affect the water supply downstream.
2.Sharks don't _____(把......作为目标) humans.
3.The _____(平均的) annual income in our area is about 50,000 yuan per person.
4.Medical waste workers play a vital role in dealing with the large _____(数量) of medical waste.
5.No one is allowed to _____(泄露) or sell personal information to any institution or individual.
二、用方框内所给短语的适当形式填空
far from, take steps, break down, take...into account, mistake...for, call on, in detail, leave over
1. They ate some bread rolls _________ from the night before.
2. The results are _________ satisfactory. You could have made them better.
3. Over time, the protein in the eggshell _________ into its constituent amino acids(氨基酸).
4. If my suggestion _________(not), I won't agree to work with them.
5. I know that you are _________ the robber. The police will find out.
6. The government _________ young students to calm down, or they would suffer from punishment.
7. I'd like you to tell me about the car accident _________ .
8. Necessary _________ have been _________ to reduce the waste release from the factories.
三、七选五
Be a Green Child
What does it mean to be green "Green" is more than just a color. It also means taking special steps to protect the environment. Why green Plants are green, and without them the Earth wouldn't be such a lovely home to us human beings. What can we do ①_____
Reduce It!
②_____ For instance, a shorter shower means you use less water and less fuel since your house uses fuel to run the water heater that warms up the water.
Reuse It!
Sometimes people call our society a "throwaway society". It means that we're a little too willing to throw away old stuff(东西) and buy new stuff. ③_____ For instance, if your baby brother becomes older and loses interest in his plastic basketball hoop(篮圈), why not give it to another family who has a little kid
Recycle It!
Recycling has never been easier. Many communities will pick it up right in front of your house and some towns even require it. Recycled goods go to a recycling center, where they can be turned into new cans, bottles, and paper.
Enjoy It!
It's true that rubbish and pollution are problems, but the Earth remains a huge and beautiful place that is ready for you to explore. ④_____ Go for a hike, visit local nature centers and gardens, and climb up mountains.
But before you travel the globe, take a look at your own backyard. Is there a spot where you could plant a tree or grow some fruit or vegetables ⑤_____
A. Here's a four-step guide to being green.
B. Many times, even if you no longer need something, someone else just might.
C. You can start locally by visiting the naturally beautiful spots in your city.
D. Tum off the water when you're brushing your teeth.
E. Get out there and get your hands dirty.
F. You can watch with pride as your tree takes root and your plants grow well.
G. When you use less of something, you do a good thing for the Earth.
四、语法填空
Here ①_____(be) some common green truths that have been shown to be only half true, or even ②_____ (complete) false.
First, paper shopping bags are better than plastic ones. In fact, both kinds of bags are bad ③_____ the environment. Plastic bags cause litter and are a danger to wild animals, ④_____ mistake them for food. It takes hundreds of years for plastic ⑤_____ (break) down. However, making a paper bag uses four ⑥_____ (time) as much energy as making a plastic bag and up to three times the amount of water.
Second, when you turn off a device, it stops using power. Electricity continues to leak from the device, even when it ⑦_____ (turn) off. So we should remove the plug from its power supply.
Third, eating local food is good for the environment. In fact, ⑧_____ is the production of food that uses most of the energy. In some cases, local produce might have used ⑨_____ (much) energy than produce grown a long way away even taking into account its transport.
Fourth, it's better to take a shower than a bath. Actually, if you spend more than eight minutes in a shower, you'll use as much water as in a bath—about 50 litres of water.
Environmental awareness is now part of daily life. But it's worth ⑩_____ (check) common ideas and opinions to see what's really green.
答案以及解析
一、
1.答案：droughts
解析：句意: 洪水和旱灾对下游的水供应有影响。
2.答案：target
解析：句意: 鲨鱼不把人作为目标。
3.答案：average
4.答案：amount
5.答案：leak
二、答案：1. left over
2. far from
3. breaks down
4. isn't taken into account
5. mistaken for
6. called on
7. in detail
8. steps, taken
三、答案：①-⑤ AGBCF
解析：①根据空前It also means taking special steps to protect the environment.及What can we do 可知,绿色也意味着采取特别的措施保护环境,那么我们该做些什么呢？下文又介绍了环保的建议,因此本空需要一个承上启下的过渡句,故A项符合语境。
②根据空后For instance, a shorter shower means you use less water and less fuel可知,较短的淋浴时间意味着你用了更少的水和燃料,故G项符合语境。
③根据空后For instance, if your baby brother becomes older and loses interest in his plastic basketball hoop(篮圈), why not give it to another family who has a little kid 可知,如果你的小弟弟长大了,对塑料篮圈没了兴趣,为什么不把它送给另一个有小孩的家庭呢？故B项符合语境。
④根据空后Go for a hike, visit local nature centers and gardens, and climb up mountains.可知,去徒步,参观当地的自然中心和花园以及爬山。故C项符合语境。
⑤根据空前句可知,看一下你的院子里有没有地方种一棵树或种一些水果或蔬菜。本空承接上文,故F项符合语境。
四、
答案： are; completely; for; which; to break; times; is turned; it; more; checking
解析：①考查主谓一致。句意：这里有一些常见的环保真理被证明只有一半正确,甚至是完全错误。本句主语truths为复数,故本空应用are。
②考查副词。句意参考上题。本空修饰形容词false,故应用副词completely“完全地”。
③考查介词。句意:事实上,两种袋子都对环境有害。be bad for意为“对……有害”,故本空应用介词for。
④考查非限制性定语从句。句意:塑料袋造成垃圾并且对把它们错当成食物的野生动物来说是一种威胁。本空引导非限制性定语从句,修饰名词animals,且在从句中作主语,指物,故应用关系代词which。
⑤考查不定式。句意:塑料分解需要几百年的时间。本句中It为形式主语,故本空应用不定式作真正的主语。
⑥考查名词复数。设空处前有基数词four, time意为“倍”时,为可数名词,故应用其复数形式。
⑦考查时态及语态。分析句子可知本句阐述的是事实,故应用一般现在时,且it和动词turn之间为被动关系,故本空应用一般现在时的被动语态。
⑧考查强调句型。句意:事实上,消耗大部分能源的是食品生产。本句为强调句型,故本空应用it。
⑨考查比较级。句意:在某些情况下,即使把运输考虑进去,当地的农产品消耗的能源也可能比种植在很远地方的农产品还要多。根据空后than可知本空应用比较级形式。
⑩考查动名词。it is worth doing sth.意为“做某事是值得的”,故本空应用动名词形式。
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