天气晴朗且大气污染较轻时

题干

天气晴朗且大气污染较轻时（　　）

A：气温日变化幅度大

B：夜晚气温较阴天稍高

C：白天大气反射作用加强

D：白天天空呈现蔚蓝色

上一题下一题 0.0难度选择题更新时间:2012-12-20 07:25:25

A,D

仔细阅读下面五个句子，然后用下面方框中所给的单词或短语填空，使每个句子在结构、句意和逻辑上正确。（提示：选项中有一个是多余的）

belong to/absent /use / make /humorous /send for

If you don't____ a flash, then it may be OK.

When it began to rain, Ben was helping his mom____ dinner.

It could be Mei's hair band. Or it might____ Linda. They both have long hair.

The British teacher is very____ . He always tell us interesting jokes.

If you are always____ from class, you will fail the examination.