问题 选择题
如图,一质量为m的物体由静止开始沿固定光滑斜面下滑,斜面倾角为θ,高为h,物块滑至底端的时间为t,这一过程中以下说法正确的是(  )

A.斜面对物体的弹力冲量为零

B.物体动能的增量等于mgh

C.物体动量的增量等于mgt

D.物体滑至斜面底端时重力的瞬时功率为mg2tsinθ

答案

答案:B

阅读理解

Some students think it difficult to learn English well. That’s because they don’t find the right way. I think reading is very important for students. The more you read, the better you’ll understand.

Reading is helpful to listening, speaking and writing. If you often read English aloud, you’ll improve your listening. On the other hand, listening a lot can help you to read better. Reading English everywhere when you are free, if you wish. You can get a lot of knowledge when you read. Sometimes you need to express your ideas, you can either speak or write. That means you are using what you learned from reading. The same as Chinese, the more you read, the better you can write. If you want to remember something, you should read again and again.

So from now on, you’d better do more reading. It’s a good way to learn English well.

小题1: Some students think it difficult to learn English well because _________.

A.they don’t work hard

B.they are afraid of English.

C.they don’t find the right way

D.they aren’t clever小题2: Reading is helpful to ________.

A. speaking            B. listening            C. writing           D. A. B & C

小题3:The writer thinks ________ is a good way to learn English well.

A.the better you write

B.doing more reading

C.the more you remember

D.the more you write小题4: In Chinese studying, the more you read , _________.

A.the better you speak

B.the better you write

C.the more you remember

D.the more you write小题5: The title of this passage may be _________.

A.English is important

B.Reading is helpful

C.English is difficult

D.Reading is important

单项选择题 A1/A2型题