传统电脑产生电磁辐射，对人体会造成伤害．现在有的生产厂商推出绿色电脑，这里“绿色

一般第一电场火花率每分钟是（）次

根据句意及汉语提示,写出各单词的正确形式,每空填一词.

1. Kitty is          (激动的) about the trip to China Space Museum.

2. Yang Liping is a dancer. She is very           (小心的) with her diet because she wants to keep slim.

3. Look! The sunlight is shining into the room          (穿过) the windows.

4. My classmates finished           (庆祝) his thirteenth birthday at midnight.

5. This book has a lot of           (信息) about Western festivals．

影响显微镜成像的相差有（）

A.色差

B.球差

C.场曲

D.畸变

E.以上均是

0t卫星DNA(α satellite DNA)

直线式时间文化和变通式时间文化何不同？