题目内容

—Is that your new math teacher Miss Li?

—It ________ be her. She has gone to Beijing for a meeting.

A. can’t B. mustn’t C. can D. must

A 【解析】句意:-那是你的新数学老师李老师吗? —不可能是她。她去北京开会了。本题考察情态动词表示猜测之意。A. can’t不可能,表示有把握的否定猜测;B. mustn’t不许,表示禁止性的语言;C. can 可能,表示不确定的肯定猜测;D. must一定,表示肯定有把握的猜测。根据后文She has gone to Beijing for a meeting.可知,对“那不是数学老师”...
练习册系列答案
相关题目

Here is an experiment (实验) to see how ants can organize some clever teamwork.

What’s going on?

You can see one of the best examples of insect teamwork by watching ants. If one ant finds food, it leads others there to eat it too. They follow each other by making long trails. The ants go back and forth collecting food, to take back to their nest (穴). When you move the fruit, the ants will still find it. But, instead of making a new direct route (路线) to the food, they will follow each other through their old trail route.

1.What will happen if one ant finds food?

A. The ant will eat all the food. B. The ant will watch other ants.

C. The ant will lead others to the food. D. The ant will wait until others come.

2.If the fruit is moved to a new position, the ants will ________.

A. rail to find it B. give up looking for it

C. make a new direct route to it D. get to it through the old trail route

3.Which is the correct order to do this experiment?

a. Move the fruit to a new position.

b. Find an ant.

c. Check the fruit an hour later.

d. Put a thin slice of fruit in front of the ant.

A. a-b-c-d B. b-d-c-a C. d-b-c-a D. c-a-d-b

4.What can we learn from this experiment?

A. The experiment is done successfully in the lab.

B. Ants do the experiment to show their team spirit.

C. Careful watching does little help in this experiment.

D. We can find out some facts by doing small experiments.

1.C 2.D 3.B 4.D 【解析】本题难度适中,主要通过小实验来说明蚂蚁的团队合作的力量。 1.根据If one ant finds food, it leads others there to eat it too可知,故选C。 2.根据When you move the fruit, the ants will still find it. But, ...

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网