问题
单项选择题
血循环中的IC（circulatingimmunocomplex，CIC）为相对分子量小的复合物，其分子量通常为（）
A.等于19S
B.小于19S
C.小于29S
D.大于19S，小于29S
E.大于29S
答案
参考答案：B
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血循环中的IC（circulatingimmunocomplex，CIC）为相对分子量小的复合物，其分子量通常为（）
A.等于19S
B.小于19S
C.小于29S
D.大于19S，小于29S
E.大于29S
参考答案：B
My uncle is a farmer. He has ninety trees on his farm. My uncle and my can’t pick(采摘) all the apples in fall(秋天). they ask my parents and me to them every year. It’s Sunday. My parents don’t go to and I don’t go to school. So we’ll go to the . We get up early(早) in the . My mother is in old clothes. My father buys many kinds of food for my uncle’s in a shop. She likes them very much. My uncle and aunt us many apples, too. I like to work on the farm.
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