题目内容
We have to admit that the biggest___________ facing the ecosystem is limited resources and the worsening environment.
| A．mission | B．challenge | C．scale | D．contribution |
B
解析试题分析：考查名词辨析A任务B挑战C刻度D贡献 题意为 我们不得不承认面对生态最大的挑战是有限的资源与糟糕的环境。在admit 的宾语从句中 the biggest changllege 是句子的主语，谓语是is ,表语是 limited resources and the worsening environment，分析清句子结构，很容易能得出答案B项。
考点考查名词辨析
每课必练系列答案Please _____all the numbers. Those numbers______10,000.
| A．add to , add up | B．add up, add up to |
| C．add up , add to | D．add up to, add to |
You’ve been working all morning — I think you _____a rest.
| A．charge | B．admit | C．bargain | D．deserve |
My uncle hasn’t been able to quit smoking, but at least he has_________.
| A．cut out | B．cut down | C．cut up | D．cut off |
The spokesman said at the conference that they were considering having the term the Russian group strongly objected to ________.
| A．changing | B．changed | C．change | D．being changed |
By speeding up reforms the UN is trying to live up to the wishes of people around the world and __________ more to building world peace.
| A．contribute | B．link | C．expose | D．attend |
To be great, you must be smart, confident, and, _____ , honest.
| A．therefore | B．above all | C．however | D．after all |
The film, ______ 3 love stories, ______ 3 different cities.
| A．consisting of; is set in | B．consists of; is set in |
| C．consisting of; was set in | D．is consisted of; set in |