外感风热，咽喉肿痛，咳痰不利，并兼有大便秘结，宜首选的药物是（）
A.柴胡
B.菊花
C.牛蒡子
D.薄荷
E.葛根
参考答案：C
根据句意填词：
1. How o_____ do you come to school late? Never.
2. Farmers milk some m _____ from cows.
3. J_____ food isn't good for your health.
4. I can't do it by myself. Can you h_____ me?
5. I eat fruit three t_____ a week.
6. My father is very busy. He only plays basketball o_____ a week.
7. Does he drink milk every morning? No, hardly e_____.
呈香呈味物质由（）检出的最低浓度称为阈值。
A.嗅觉
B.味觉
C.感官
D.色泽
