问题
单项选择题
3位为乙酰氧甲基，7位上有2-噻吩乙酰氨基的头孢菌素是( )
A．头孢派酮
B．头孢噻吩钠
C．头孢克洛
D．头孢噻肟钠
E．头孢羟氨苄
答案
参考答案：B
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3位为乙酰氧甲基，7位上有2-噻吩乙酰氨基的头孢菌素是( )
A．头孢派酮
B．头孢噻吩钠
C．头孢克洛
D．头孢噻肟钠
E．头孢羟氨苄
参考答案：B
| 从方框中选词并用其适当形式填空。 | |
On Saturday, my parents and I 1______ to the Beishan Park to play. First, we 2______ the flowers. Then, we climbed the 3______. In the afternoon, we went to my grandparents' family 4______ them. I played 5______ with my grandpa. In the evening, my parents and I 6______ the Beijing-Shanghai High- Speed Railway to Shanghai to take part in an English Contest. And on Sunday morning, we 7______ to Shanghai. We went to Shanghai Hotel to take part in the contest. And at noon, we 8______ lunch at KFC. The 9______ was very good. I ate a lot. And in the afternoon, we took the Beijing-Shanghai High-Speed Railway back home. We were 10______, but we were very happy. What do you think of my last weekend? |