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【单选题】
同时具有调理作用和免疫粘附作用的补体成分是A.
C3a、C5a
B.
C4a、C5b67
C.
C1q、C1r、C1s
D.
C4a、C5a
E.
C3b、C4b
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【简答题】根据句意及首字母提示完成单词。 1. The rain l_____three hours yesterday. 2. Mr. Smith came back from New York by plane yester- day. We met him at the a_____. 3. The tenth month of a year is O_____. 4.Would you like...
【简答题】阅读理解。 It was two months before Christmas, when nine-year-old Almie Rose told her father and me that she wanted a new bike, Her Barbi bike was just too old, and it needed repairing as well. As Christma...
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