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【单选题】
下列对生物电子等排原理叙述错误的是A.
以生物电子等排体的相互替换，对药物进行结构的改造，以提高药物的疗效
B.
以生物电子等排体的相互替换，对药物进行结构的改造，以降低药物的毒副作用
C.
凡具有相似的物理性质和化学性质，又能产生相似生物活性的基团或分子都称为生物电子等排体
D.
生物电子等排体可以以任何形式相互替换，来提高药物的疗效，降低毒副作用
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反馈参考答案：
举一反三
【简答题】内桥接线适用于情况；外桥接线适用于情况。
【单选题】When the author says 'I gave up' at the end, he means ______.
A.
he gave up his belief in the moral idea of the hare-and-tortoise story
B.
he gave up arguing with Tony
C.
he gave up Tony as a hopeless child
D.
he gave up trying to keep up with the new generation
【单选题】When the writer says 'I gave up' at the end，he means ______.
A.
he gave up his belief in the moral idea of the hare and tortoise story
B.
he gave up arguing with Sonny
C.
he gave up Sonny as a hopeless child
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