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【判断题】
送气音与不送气音的区别在于,发音时,口腔呼出气流较弱的为送气音,较强的为不送气音。所以j是送气音,q是不送气音。A.
正确
B.
错误
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【单选题】Many paintings of the American Southwest convey a feeling of isolation and loneliness that mirrors the______landscape they depict.
A.
plentiful
B.
sprawling
C.
desolate
D.
important
【单选题】No country can prosper in isolation or meet all challenges on its own. ( )
A.
in isolation
B.
on its own
C.
in isolation...on its own
【单选题】The research at the University of Wisconsin is mentioned to show ______.
A.
the isolation of stem cells
B.
the effects of gene therapies
C.
the advantages of human cloning
D.
the limitations of tissue replacements
【单选题】Isolation is the biggest difficulty for HIV-positive women. 查看材料
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】all of the following are examples of prezygotic isolation mechanisms except
A.
ecological isolation
B.
hybrid sterility
C.
behavioral isolation
D.
temporal isolation
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