Researches are convinced ______ the positive effect of laughter ______ physical - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

Researches are convinced ______ the positive effect of laughter ______ physical and mental health.

A．of; at

B．by; in

C．of; on

D．at; on

答案

解析

试题分析：考查介词：be convinced of相信…，第二空填on，effect on…对…的影响，句意：研究者相信，笑声对身体精神健康的积极影响。选C。
点评：本题考查了介词短语，在平时要加强识记和记忆。做题时要结合上下文判断。

核心考点

试题【Researches are convinced ______ the positive effect of laughter ______ physical 】；主要考察你对介词和介词短语等知识点的理解。[详细]

举一反三

passion, people won"t have the motivation or the joy necessary for creative thinking.

A．For

B．Without

C．Beneath

D．By

题型：不详难度：| 查看答案

Mother said she was by no means annoyed; ________, she was happy to be able to make her guests feel at home.

A．all in all

B．for one thing

C．on the contrary

D．by the way

题型：不详难度：| 查看答案

An increasing number of products made in China are good quality but much less expensive than those from abroad.

A．on

B．in

C．for

D．of

题型：不详难度：| 查看答案

My brother gave me a present for my birthday but I gave him nothing ______ his.

A．in return

B．by turns

C．in turn

D．in return for

题型：不详难度：| 查看答案

Because natural disasters occur at random times, it is difficult to warn people _______.

A．at present

B．at last

C．on time

D．in advance

题型：不详难度：| 查看答案

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