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【判断题】
当生长素与细胞分裂素的比例,仅形成根,细胞分裂素与生长素的比例则产生苗。A.
正确
B.
错误
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举一反三
【简答题】Meeting in progress，quiet please．
【单选题】Keep quiet, please. We're not allowed _____ much noise in the reading room. [ ]
A.
to make
B.
making
C.
to making
D.
make
【简答题】Be quiet, please. We’ll help you to ______________ the problem.
【单选题】Be quiet, please. We're going to have an English test. Now I'm going to ______ your papers. [ ]
A.
give out
B.
give up
C.
give back
D.
give away
参考解析：
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