皮皮学，免费搜题
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【单选题】
小儿上呼吸道感染最常见的病原体是A.
支原体
B.
衣原体
C.
细菌
D.
病毒
E.
真菌
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举一反三
【单选题】In the United States, Father's Day falls on ________ third Sunday in ________ June.
A.
the; /
B.
the; a
C.
/; the
D.
a; /
【简答题】What has been a divisive issue across the United States? ［A］Whether affirmative action should continue to exist. ［B］Whether this law is helping minorities or the white majority. ［C］Whether racism exis...
【简答题】The blast furnace is lighted by an electric spark.
【单选题】The electric furnace （）before it can be used.
A.
needs repairing
B.
should be in repair
C.
must repair
D.
has to be repairable
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