正确答案: D

矛盾规律

题目：辩证法的实质和核心是指（ ）

解析：D

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举一反三的答案和解析：

[单选题]我国社会主义经济建设必须始终坚持以（ ）

经济效益为中心

[单选题]Passage FourIt seems that beauty and women are twins. Observe for yourself. Ads on fashion flood TV screen, radio programs, magazines and the streets. Whether they have realized or not, women are besieged (包围) by a sea of fashion. They are taught to think that without beautiful clothes they will grow old and lose their charm. So who dares to neglect dressing up at the cost of their appearance and youth?

Women try to maintain their beauty by dressing up

解析：

46．答案为D  根据第一段可排除其他三个选项，女人需要时装让自己保持美丽，与美丽是同时存在的。

[单选题]The government who ______ responsible for this event attempted to find a solution.

were

解析：16．主句的谓语动词是过去时，从句的谓语动词应与其一致。排除选项 C和 D。Who强调的是个人，政府中的成员，应用复数。选项 A是正确的。

[单选题]关于致密斑的描述，下列选项正确的是 （ ）

是Na+含量变化的感受器

[单选题]从物到感觉和思想的认识路线是（ ）

唯物主义