— You won't believe it, Sam.I was chosen

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问题选择题

— You won't believe it, Sam. I was chosen as an exchange student to China.
— Congratulations! _____

A. That's something.
B. You did a good job.
C. That's all right.
D. You got it.

答案

答案：A

解答题

如图，在一个10×10的正方形DEFG网格中有一个△ABC．

（1）在网格中画出△ABC向下平移3个单位得到的△A1B1C1；

（2）在网格中画出△ABC绕C点逆时针方向旋转90°得到的△A2B2C2

单项选择题

导热系数从大到小排列应（）。

A.铜＞铝＞铁

B.铜＞铁＞铝

C.铁＞铜＞铝

D.铝＞铜＞铁