问题 选择题

来自欧洲的天文学家宣称,他们在距离地球20.5光年以外的太空发现了一颗与地球颇为相似的行星,并认为这颗行星可能适合孕育生命。据此回答题:

小题1:该行星适合孕育生命的条件应该主要包括

①温度适宜 ②有液态水 ③无大气 ④宇宙环境安全、稳定

A.①②③

B.①②④

C.②③④

D.①③④小题2:地球上的大气层适于生物的呼吸,大气层的存在主要取决于

A.日照条件稳定

B.日地距离适中

C.地球的质量和体积适中

D.有原始海洋

答案

小题1:B

小题2:C

题目分析:

小题1:地球上生命存在的自身条件包括“适宜的温度、较厚的大气层和液态水”;地球的宇宙环境:由于大小行星各行其道,故地球形成了较安全的宇宙环境和稳定的光照条件。故③项错误。

小题2:由于日地距离适中,影响了地球具有适宜的温度条件;地球上的液态水是地球内部放射性元素的衰变导致了地球内部水汽的释放;地球是适宜的大气是由于地球的质量体积适中,故引力适中,形成了较厚的大气层。

点评:本题解题关键是掌握地球上生命存在条件的原因分析,调用课本相关内容,注意因果关系。

阅读理解

Could you be a genius like Einstein? A genius needs to learn and think. Reading is a good idea, but it is not enough. Einstein’s advice is to use your brain more. Here are some tips:

l Ask. When you look at new things, ask why they are new or different. Ask more questions. Ask yourself and others. Keep thinking until you find the answers.

l Draw. Einstein thought in pictures. Sometimes, it helps to draw problems and ideas.

l Read. Try to read new things. Read books from different parts of the library. After you read, think about the ideas you have learned. Are they different from what you thought?

l Relax. Many ideas come when you are relaxed. Take some time to relax yourself in the ways like taking a walk in a park, going to a concert or a museum.

l Write. Keep a diary. Write down your questions and ideas. Write down new ideas after you read.

l Share. Einstein used to talk to his friends and explain his ideas. Sometimes, a friend can help you find the answer to a problem.

l Be brave. Do not let other people say your ideas are silly. Explain yourself. Let other people explain why they think you are wrong. Then decide.

小题1:What can we do to relax ourselves according to the passage?

A.Keeping a diary.

B.asking questions.

C.Taking a walk.

D.Reading mew things.小题2:The author suggested we should    if other people say our ideas are silly.

A.discuss the ideas with others

B.draw problems and ideas

C.go to a museum with others

D.write down your ideas小题3:Which of the following is NOT TRUE according to the passage?

A.A genius needs to learn and think.

B.We should find the answers all by ourselves.

C.Einstein’s advice is to use our brain more.

D.Einstein liked to talk to his friends and explain his ideas.

口语交际,情景问答题