在下面各式的括号里填上适当的数．

若$f\left(x\right)=\sqrt[3]{x}$，则$f\text{'}\left(1\right)$等于（   ）

补全对话。
A: Good evening.____
B: Yes, please. I want a pair of sneakers (运动鞋).
A:____
B: No, I want some light (轻的) ones.
A: What about this pair? They're light and they are fit for (适合) playing sports.
B: This pair looks nice. ____
A: What color do you like?
B: Brown or blue.
A: Here are the brown ones.
B: OK.____
A: 75 dollars.
B: I'll take them and here is the money.
A:____See you next time.

A. Can I help you? B. How much are they? C. Do you like these ones? D. The red ones look nice. E. But I don't like the color. F. But I don't like brown sneakers. G. Here are your sneakers and thanks for coming.

刘老师家七月份用水20吨，比上月多用了6吨，上月比这月节约了（   ）。

一位美国将军说：“我们是在错误的时间和错误的地点与错误的对手打了一场错误的战争······”下面与这场“错误的战争”有直接联系的军队是（   ）