小明同学和妈妈到公园游玩，他想为妈妈拍一张清晰的照片，那么妈

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问题选择题

小明同学和妈妈到公园游玩，他想为妈妈拍一张清晰的照片，那么妈妈应站在照相机镜头的：[ ]

A．1倍焦距以内

B．2倍焦距以外

C．焦点位置上

D．1倍焦距和2倍焦距之间

答案

答案：B

阅读理解

请根据“冀教版八年级英语上册Unit8 《Celebrating Me 》”的课文内容选择正确答案完成下列句子。

1. Peter stood _____ when his teacher talked to him.

A. at his desk

B. inthe front of the teacher's desk

C. in front of the teacher's desk

D. at the back of the classroom

2. What are around many of the words Peter wrote?

A. A mark crossing.

B. A square.

C. Some black circles.

D. Some red circles.

3. The word "_____" was spelled "bot" by Peter.

A. bought

B. but

C. brought

D. boilt

单项选择题

NaCl单位晶胞中的“分子数”为4，Na⁺填充在Cl^-所构成的（）空隙中。

A.全部四面体

B.全部八面体

C.1/2四面体

D.1/2八面体