1 . These biological discoveries all help us understand the ________ for life on our planet, even in the most extreme circumstances.
A.component | B.coverage | C.capacity | D.comprehension |
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2 . The management plan consists of four main components, and each one is equally important.
A.条件 | B.方式 | C.部分 | D.结果 |
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3 . There is a growing ________ among employers to hire casual staff.
A.tendency | B.component | C.profile | D.expansion |
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