皮皮学，免费搜题
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【单选题】
中国图书馆分类法共有多少个大类A.
5
B.
17
C.
22
D.
26
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】心瓣膜病(valvular Vitium of the heart)
【单选题】【3+2天天练 第60天】下列哪一个选项是空缺处的最佳答案。As soon as he ______ the gate from the outside he comes into the garden.
A.
will open
B.
opens
C.
is opening
D.
has been opening
【单选题】【3+2天天练 第60天】下列哪一个选项是空缺处的最佳答案。Rex became an expert. He was very ______.
A.
crafty
B.
sly
C.
cunning
D.
skilful
【单选题】【3+2天天练 第60天】下列哪一个选项是空缺处的最佳答案。My husband spent weeks ______ him to press his paw on the latch.
A.
teaching
B.
guiding
C.
leading
D.
conducting
【简答题】工业尾气中氮氧化物的去除技术有哪些
【单选题】【3+2天天练 第60天】下列哪一个选项是空缺处的最佳答案。My husband removed the gate. He ______.
A.
took it in
B.
took it away
C.
took it on
D.
took it up
【单选题】【3+2天天练 第60天】下列哪一个选项是空缺处的最佳答案。He would bark until someone opened the gate. That's what he ______.
A.
is used to doing
B.
used
C.
is used to
D.
used to do
【简答题】心瓣膜病(valvular vitium of the heart)(名词解释)
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