《中国药典》在其性状下收载有比旋度测定的药物有 （ ）
A．右旋糖酐20
B．硫酸奎宁
C．葡萄糖
D．硫酸阿托品
E．盐酸麻黄碱
参考答案：A,B,C,E
钢管杆竖立必须与钢基可靠连接。要求钢基填土扎实，在离地面（）处浇制混凝土与路面相平。
A.100mm
B.300mm
C.500mm
D.700mm
用适当的代词填空
1. This is Tom. _______ is an English boy.
2. That's Tina. _______ eraser is red.
3. This is a cat. _______ name is Mimi. _______ is two years old.
4. That's Miss Yang. ________ is my English teacher.
5. Are these your sisters? No, _______ aren't.
6. This is my friend, John. _______ is 12 years old.
7. What's _______ favorite color? My favorite color is red．
8. That is Mr. Green. ________ telephone number is 355-2829.
9. Is Jeff your brother? Yes, ______ is.
