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1 . Tom always turns to his father for help and he has absolute ________ in his father.
A.campaign | B.caution | C.confidence | D.collection |
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2 . With their patience and efforts, Chris and Tim successfully developed a ____ of artificial breeding (人工繁殖)and natural reproduction.
A.collection | B.combination | C.system | D.strategy |
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3 . Since our school does not employ full-time librarians, the library ________ is usually run by volunteers with special responsibilities for library work.
A.principle | B.collection | C.application | D.personnel |
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