发现了抗疟药青蒿素的科学家是（ ）。 A.屠呦呦 B.李政道 C.开普勒 D.杨振宁

标签： 大学美育（内江师范学院）章节测试答案

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  下列各项措施中，能够缩短现金周转期的有（ ）。 A.延迟支付货款 B.减少对外投资 C.加快产品的生产和销售 D.加速应收账款的回收

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  Please Listen to the following TED talk and answer the questions followed.（11分06秒-11分39秒）As for the sea level, the speaker speculates that according to current evidence of scientific research, it will A.be more?if we keep burning fossil fuels,?perhaps even five meters, which is 18 feet,?this century or shortly thereafter B.rise at least one meter C.be more?if we keep burning fossil fuels,?perhaps even 18 ?meters, which is five feet,?this century or shortly thereafter D.be more?if we keep using green energy,?perhaps even five meters, which is 18 feet,?this century or shortly thereafter

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  基因突变后导致编码一种氨基酸的密码子变成编码另一种氨基酸的密码子，从而使所合成的蛋白质分子改变，这种突变方式属于（ ）。 A.终止密码突变 B.无义突变 C.同义突变 D.错义突变