手握着两张纸，让纸自由下垂，在两张纸的中间向下吹气，发现两张

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问题填空题

手握着两张纸，让纸自由下垂，在两张纸的中间向下吹气，发现两张分开的纸_________在一起了，说明了在气体中，流速越大的位置，压强_________．

答案

靠拢；小．

填空题

根据短文情景。用恰当的短语或句子填空，使之意思完整。

A teacher asked her students to write an article. She told the class, "Write about (1) ______________

if you had a million dollars. Do you understand?"

The students said they understood. Then they all began writing. Everyone wrote two pages except one

student, Terry Jones. He (2) ______________ but only sat at his desk.

At the end of the class, the teacher looked at all the papers as the students gave them to her. When she

saw Terry's paper, she asked him,"Why …?" "Because I have a million dollars." Terry answered.

The teacher (3) ______________, but she could say nothing.

单项选择题

下列排序方法中，最坏情况下比较次数最少的是

A．冒泡排序

B．简单选择排序

C．直接插入排序

D．堆排序