问题
单项选择题
血液中和血浆蛋白结合的T3、T4大约是
A．67%
B．88%
C．90%
D．99%
E．74%
答案
参考答案：D
解析：血浆中99%以上的T3、T4都和血浆蛋白可逆性结合。
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血液中和血浆蛋白结合的T3、T4大约是
A．67%
B．88%
C．90%
D．99%
E．74%
参考答案：D
解析：血浆中99%以上的T3、T4都和血浆蛋白可逆性结合。
| 用方框内所给单词的适当形式填空。 | |
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| Tom and his sister Amy are students. Tom takes a 1 to school every day, and Amy does too. Some of 2 friends walk(步行，走)to school. Tom and Amy 3 home at four o’clock in the afternoon. They do their 4 before(在....以前) dinner, and they play computer games 5 dinner. They usually go to 6 early in the evening. Tom and Amy have 7 meals(饭) a day: breakfast, lunch and dinner. They have breakfast 8 home. On school days, they have lunch at school. They usually 9 dinner at home. Their father comes home from 10 at six and their mother cooks dinner at seven. |