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问题 单项选择题

为了改善压片物料的流动性，宜选用的赋形剂是（）

A.糊精

B.糖浆

C.微分硅胶

D.淀粉

E.硫酸钙

答案

参考答案：C

选择题
圆x2+y2-2y=3上的点到直线x-y-5=0的距离的最大值是（　　）
A．3
2
+1		B．3
2
+2		C．3
2
-2		D．3
2
-1
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填空题
从方框中选择适当的词语填空。
have a look at , at a very good price ,on sale , in blue , I 'm sorry , how
 much , buy ... from , in all colors , come down to , sell ...to ...
1. The boy _____ is my brother.
2. This shop has sweaters _____ .
3. Boys can _____ T-shirts _____ this shop.
4. Please _____ my home and have dinner with us.
5. We have shoes _____ 
6. This store _____ school things _____ the students.
7. Can I _____ your family photo?
8. The white pants are _____ for $20.
9. —What time is it?
    —Oh, _____ I don't have a watch.
10. —_____ are the red socks?
      —They are $5.
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