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【单选题】
菜豆象的寄主最主要是( )。A.
菜豆
B.
大豆
C.
绿豆
D.
豇豆
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【简答题】肛管排气操作不妥的是
【单选题】We promised them to be there by six. Now it’s six thirty already, and they _______ for us impatiently.
A.
wait
B.
had waited
C.
should wait
D.
must have waited
【单选题】Sellers promised to our orders if we could advise them of our requirements two weeks in advance.
A.
take priority to
B.
make priority of
C.
give priority to
D.
request priority of
【简答题】肛管排气操作不妥的是
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