氨基酸注射液通常必需氨基酸和非必需氨基酸的含量比是（）。
A.1：1
B.1：2
C.1：3
D.1：4
E.1：5
参考答案：B
根据句意及首字母或图片补全单词
1. Don't play the d______.It's too noisy.
2. In China,the famous music of v______ is Liang Zhu.
3. Beauty! May I know your e-mail a______?
4. We can hear wonderful m______ in shopping center.
5. We usually s______ in the river in summer.
6. —Can you p______?
—Yes,look at the picture on the wall.
7. She likes to d______ to the muisc.She's a good dancer.
8. I want to j______ the club,because I can play the g_____.
9. He can’t play chess ______ (good).
异读词
