译林版(2020)必修第三册Unit 1 Welcome to the unit & Reading随堂检测（1）（含答案）

Unit 1 Welcome to the unit & Reading
一、填空
1._____ is essential to live in harmony with nature.
2.There is little doubt that man has had an impact _____ the Earth's climate.
3.The Yangtze River dolphin is on the list of endangered _____(species).
4.Below us on our right _____(be) a thickly wooded valley, where a big fire destroyed thousands of trees.
5.If we don't take immediate action to protect the rainforest, it may _____(appear) forever.
二、阅读理解
The endangered pandas in the Qinling Mountains might face a new threat(威胁): the loss of their food, bamboo, which makes up 99% of their meals.
Adult pandas spend most of the time eating bamboo and have to take in at least 40 pounds a day to stay healthy. However, a new study warned that they might soon find their food gone because most of the bamboo in the Qinling Mountains might disappear by the end of the century as a result of the rising temperature.
A team made up of researchers has studied the effects of climate change on the bamboo in the Qinling Mountains. They have found that bamboo is very sensitive to climate change. "80% to 100% of the bamboo will be gone if the average temperature increases by 3. 5 degrees Centigrade worldwide by the end of the century," said Liu Jianguo, one of the report's authors. He added, "This is how much the temperature will rise by 2100 even if all countries keep their promises in the Paris Agreement. But you know what is happening around the world."
In recent years, China has been trying its best to protect the endangered pandas by setting up more and bigger nature reserves(保护区).
"But it is far from enough and the endangered pandas need cooperation from the rest of the world, because their future is not just in the hands of the Chinese," said Shirley Martin from World Wildlife Fund but not a member of the team.
The Qinling Mountains are home to about 345 pandas. That is about 18% of the China's wild panda population. In addition, about 375 are living in research centers and zoos in China.
1. What can we learn from the first paragraph
A. Lots of the bamboo in the Qinling Mountains will probably disappear.
B. The Qinling Mountains cannot provide enough bamboo for the pandas.
C. Pandas in the Qinling Mountains are just threatened with the loss of food.
D. Pandas have already eaten 99% of the bamboo in the Qinling Mountains.
2. What did Liu Jianguo mean
A. China needs more help from World Wildlife Fund.
B. The current climate is not suitable for bamboo any more.
C. China is making great efforts to protect the pandas.
D. It is difficult to prevent the temperature from rising by 3. 5℃.
3. How many wild pandas are there in China
A. About 345. B. About 720. C. About 1,900. D. About 2,275.
4. Which can be the best title for the text
A. The Disappearance of Bamboo B. Necessity of Changing Pandas' Food
C. Efforts Made to Save Pandas D. A New Threat Faced by Pandas
答案以及解析
一、
1.答案：It
解析：考查it作形式主语。分析句子结构可知，此处应用It作形式主语，句中的不定式短语to live in harmony with nature是真正的主语。
2.答案：on
解析：考查固定短语。“have an impact on...”是固定短语，表示“对……有影响”，故填on。
3.答案：species
解析：考查名词复数。根据句意可知，此处应用名词的复数形式，species单复数同形，故填species。
4.答案：was
解析：考查倒装、时态和主谓一致。介词短语Below us on our right位于句首引起倒装，句子真正的主语是a thickly wooded valley，故be动词应用单数形式;又根据句意可知，此处应用一般过去时。
5.答案：disappear
解析：考查词形转换。句意:如果我们不立刻采取行动保护这片雨林，它可能会永远消失。根据句意可知，此处表示“消失”，应用disappear。
二、
答案：1-4 ADCD
解析：1.根据第一段的内容可知，秦岭地区大熊猫赖以生存的竹子可能会大量消失。故选A。
2.根据第三段中他所说的话可知，他认为即使所有国家都严格遵守其在《巴黎协定》中的承诺，到2100年全球气温仍将上升3.5摄氏度。故选D。
3.根据最后一段中的"The Qinling Mountains are home to about 345 pandas. That is about 18％ of the China's wild panda population"可得出，中国野生大熊猫总数约为1900只。故选C。
4.文章开篇点明主题，秦岭地区的大熊猫可能面临新的威胁——其赖以生存的竹子可能消失。故D项最符合题意。
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