单面胶版纸主要用来印刷()
A.招贴和年画
B.宣传画
C.日历
D.高档印刷品
参考答案:A, B
从Ⅱ栏中找出与Ⅰ栏相对应的答语。
Ⅰ
1. When is your birthday?
2. How much is the blue T-shirt?
3. What's the time?
4. What does he do?
5. Why do you like monkeys?
Ⅱ
A. It's ten o'clock.
B. He's a teacher.
C. My birtbdayis September 1st.
D. Because they are cute.
E. It' s ten dollars.
1. ______2 .______ 3. ______ 4 .______ 5 .______
用双缩脲反应鉴别蛋白质常用( )溶液
A.NaOHB.CuSO4C.CaCO3D.Ba(OH) 2E.BaSO4