皮皮学，免费搜题
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【单选题】
关于端粒下列说法正确的是?A.
端粒的复制在体细胞中普遍存在
B.
端粒酶延长了DNA链的5’端
C.
端粒消耗完后会引起细胞的衰老和死亡
D.
端粒的出现避免了细胞分裂造成DNA链的缩短
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皮皮学刷刷变学霸
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【判断题】According to the strategic-trade-policy hypothesis, government can alter the terms of competition to favor domestic companies, thus increasing their profits at the expense of their rivals.
A.
正确
B.
错误
【单选题】Manufacturing companies in China are ________ because workers' salaries are increasing.
A.
moving overseas
B.
failing
C.
changing
【简答题】Government rules now require car companies to design and produce cars with increasing _______ engines.
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