阅读下面材料,从方框中所给的A—E五个选项中选出正确选项(其中一项是多余选项),将其序号填入第21—24小题,并回答第25小题。
Last week we asked readers online for their predictions about life in 100 years. 21.
Marie Bee: 22.
People will be able to control the weather. For example, if we need rain, we can easily turn the fine day into a rainy day. And when we don't need it, we can easily turn the rainy day into a fine day.
Dev: 23.
We can expect this to come true by 2050 for many people. By 2100, everyone will be able to do that. With the help of computers, our brains can work much faster and better.
Ahdok: 24.
I believe in 100 years people will be able to build many space elevators. It will become very easy and cheap for common people to travel to space. We won't need rockets(火箭) or spacecraft(宇宙飞船) any more.

25. What will people be able to do in space in 100 years? (Answer within 15 words)

21. C
22. D
23. B
24. A
25. Build space elevators.（答案不唯一，言之有理即可）

【分析】本题是阅读补全类题目，解题思路为：先通读原文和选项，理解上下文的逻辑关系。21空前文提到询问读者对100年后生活的预测，后文列举了多个预测内容，因此该空需引出这些答案，对应选项C；22空后文Marie的回答是控制天气，与选项D匹配；23空后文Dev提到电脑帮助大脑更快工作，对应选项B；24空后文Ahdok提到建太空电梯，对应选项A；25空根据Ahdok的表述，100年后人们能建太空电梯，据此作答。
【解析】21. 前文引出对100年后生活预测的话题，后文列举了三个大胆的答案，选项C“Here are three of the boldest answers.”起到承上启下的作用，故选C；22. Marie的回答核心是控制天气，与选项D“We will be able to control the weather.”匹配，故选D；23. Dev的回答核心是电脑让大脑工作更快，与选项B“We will all be connected to computers to make our brains work faster.”匹配，故选B；24. Ahdok的回答核心是建太空电梯，与选项A“People will be able to build space elevators.”匹配，故选A；25. 根据Ahdok的表述“I believe in 100 years people will be able to build many space elevators.”，可知答案为Build space elevators.
【答案】21.C 22.D 23.B 24.A 25.Build space elevators.
【知识点】阅读理解补全、信息匹配
【点评】本题考查学生的阅读理解与信息匹配能力，需结合上下文语境分析，难度适中，学生理清逻辑即可正确作答。
【难度系数】0.6