关于“对”的定义，下列各组正确的说法是()。

According to the last paragraph, which of the following statements is true?A．It is a simple matter to change consumers' preference for food.B．The relationship between food desert and dietary health is certain.C．Price can be a decisive factor when consumers buy food.D．Opening full-service supermarkets will eliminate food deserts in the U. S. 点击查看答案

下列哪项不符合氯化琥珀胆碱的性质()

A.为季铵盐类化合物，极易溶于水
B.为酯类化合物，不易水解
C.可发生Hofmann消除反应
D.在血浆中极易被酯酶水解，作用时间短
E.为去极化型肌松药
参考

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