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问题
单项选择题
疟原虫在人体内的发育包括
A.子孢子形成
B.配子体形成
C.红细胞内期
D.红细胞外期
E.A+B+C
答案
参考答案:E
选择题
It was ______ exciting news that more than ten students in a single school were admitted to Tsinghua University in the same year.
A. one
B. an
C. /
D. a
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单项选择题
酸性气带水进炉,将()转化率。
A.提高
B.降低
C.不影响
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