问题
单项选择题
以下β受体阻滞剂中，哪一个是高水溶性的。而且主要通过肾排泄，不通过血脑屏障，其有效剂量容易控制（）。
A.以上都不是
B.阿替洛尔
C.美托洛尔
D.吲哚洛尔
E.普萘洛尔
答案
参考答案：B
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以下β受体阻滞剂中，哪一个是高水溶性的。而且主要通过肾排泄，不通过血脑屏障，其有效剂量容易控制（）。
A.以上都不是
B.阿替洛尔
C.美托洛尔
D.吲哚洛尔
E.普萘洛尔
参考答案：B
We have completed our first month of preschool. Matthew seems to 26 it. He is catching on to the routine quite nicely. I didn’t leave him there 27 much the first couple weeks. I am finding if I’m not there he behaves much better. In this class a little German boy, who does not speak 28 ，cried all the time at first and now cries occasionally. The Monday of the second week the little fellow just cried and cried. He was sitting 29 Matthew. I thought Matthew was going to start 30 and join in. I stood by and watched, ready for the rescue. Matthew kept turning around and 31 the boy. Then he reached his hand back and 32 him on the leg. He was comforting the boy! Later Matthew was playing with a 33 and the boy with blocks. Actually he was just standing by and crying. Matthew drove his truck over to the blocks, 34 it, picked up a few of the blocks and started handing them to 35 . They then together started 36 towers on the table and the little boy 37 crying．It seemed 38 Matthew knew what the little guy needed．Here was the little guy，who can’t speak English，and Matthew，who 39 playing together，like they were best 40 . One of the days when I stayed，they were at lunch and Matthew was 41 at the table. I pulled up a chair to sit next to him．He smiled，then grabbed his book bag and took off running 42 the cafeteria．I took off after him．When we reached the wall he just giggled (咯咯笑)，turned around and looked at me． I bent 43 to blame him for leaving his seat and running. He suddenly 44 a big wet kiss right on my cheek and smiled at me．All I could do was to take his hand and 45 him back to his seat．Then I turned my back and couldn’t help laughing.
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