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【判断题】
果实除袋在上午8时～下午5可以进行A.
正确
B.
错误
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举一反三
【判断题】None of the author's job interviewers cared which college she went to.A. √ B. ╳
A.
正确
B.
错误
【单选题】对群落结构和功能有重要影响的物种称为 _____ ,他们若从群落中消失会使群落结构发生严重改变,甚至能导致其他物种的灭绝和群落的剧烈变化。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
优势种
B.
建群种
C.
伴生种
D.
关键种
【单选题】In the author's opinion, which of the following statements is true?
A.
The term 'secondary earner' does not depend on gender.
B.
If A will earn more money than B, family welfare is maximized if A agrees to relocate.
C.
If B will earn more money than A, family welfare is maximized if A agrees to relocate.
D.
All of the above are true.
E.
None of the above are tru
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