下列现象与大气对太阳辐射的削弱作用无关的是[ ]

A、多云的夜晚通常比晴朗的夜晚温暖些

B、夏季的天空多云时白天的气温不会太高

C、晴朗的天空呈现蔚蓝色

D、日出前的黎明天空明亮

根据句意和括号内所给单词的适当形式写出单词。

1. The light is red. You must wait. It's _______ (danger) to cross the road.

2. What's the _______ (mean) of this word, do you know?

3. Jenny is very kind. She often shares her              (toy) with her friends.

4. My room is not as big as my _______ (brother).

5. Your sister is too young to dress _______ (she). Please help her, Ann.