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【简答题】
将下列英文翻译: A bioisostere is a compound resulting from the exchange of an atom or of a group of atoms with another, broadly similar, atom or group of atoms. The objective of a bioisosteric replacement is to create a new compound with similar biological properties to the parent compound. The bioisosteric replacement may be physicochemically or topologically based
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【简答题】音乐表现的九个基本要素是: 、 、 、 、 、 、 、 、 。
【简答题】1998年3月17日，曾某在寿险公司业务员的动员下填写了终身寿险投保单，并支付了首期保费。同年4月2日，曾某因意外事故不幸死亡，其家属凭借保费收据向保险公司索赔，却遭到拒绝。保险公司的理由是，曾某还没有进行体检，保险单亦尚未签发，双方之间不存在权利与义务关系，所以不需赔付。 问：此案例到底该不该赔呢? 为什么？
【单选题】They failed to pass the exam last time; I regretted _______.
A.
to be not able to help
B.
being unable to help
C.
being not able to helping
D.
not be able to help
【简答题】地下建筑火灾的内部侦察安全问题,主要是由_________造成的。
【单选题】Many A decade ago, at a time when plaices like Ivory Coast and Equatorial Guinea were being largely ignored by the petroleum world majors in favor of proven mega-sources like Nigeria and Angola--and w...
A.
New finds in West Africa set off an offshore land rush.
B.
Bruso helped the development of West African oil.
C.
Full-fledged makeover of the U.S. strategic relationship with Africa is badly needed.
D.
West Africa's petroleum potential: a classic win-win situation.
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