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【单选题】
地钱配子体为( )A.
雌雄异株
B.
雌雄同株
C.
雌雄同枝
D.
无性植物
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反馈参考答案：
举一反三
【单选题】Only after his friend came _______.
A.
did the computer repaired
B.
was repaired the computer
C.
was the computer repaired
D.
the computer was repaired
【单选题】Only after his death _______ considered correct.
A.
his theory was
B.
was his theory
C.
did his theory
D.
had his theory
【简答题】按不对称碳原子上取代基R的排列方式,可得到三种空间立构,即()、()、()。
【单选题】产生软件危机的原因主要与哪两个方面的问题有关?( )
A.
软件在计算机中很难识别，存在磁盘中也看不到
B.
软件设计对人的智商要求很高，也要求很高的资金投入
C.
软件产品本身的特点，开发和维护过程中用的方法不正确
D.
软件很难理解，硬件也很复杂
【单选题】Like most famous poets, Du Fu’s poems became ____ only after his death.
A.
population
B.
populous
C.
popular
D.
populate
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