既能清泻肝胆实火，又能清热燥湿的是（）
A.龙胆
B.菊花
C.黄柏
D.苦参
E.决明子
参考答案：A
QTc的计算公式为（）
A.A
B.B
C.C
D.D
E.E
用适当的介词填空.
1. He goes back ___ Sunday morning.
2. He goes________ No. 5 Middle School.
3. I like some milk ________breakfast.
4. What ____ going to the park?
5. It's time________ school.
6. We live________ Canada.
7. I have supper________ the evening.
8. What's the matter________ you, Tom?
9. Look________ this picture.
10. He does his homework________ a Wednesday morning.
