D.teachers and students got friendlier so that the students became more active and scored higher
3.According to the passage, smiling can have the following effects on health except________.
A.lowering blood pressure
B.reducing stress
C.increasing happiness
D.improving intelligence
4.What's the writer's purpose of writing the passage?
A.To advise us to say hello more often.
B.To tell us saying hello can improve productivity.
C.To prove that environments influence friendliness.
D.To tell us saying hello is a form of universal health insurance.
答案:
解题导语:本文是一篇说明文。“Hello”这个词是我们小时候最先学会的单词之一,但也是成年人最说不出口的一个单词。作者通过自己的亲身体验来说明向别人说“Hello”的诸多好处。
1.C 解析:推理判断题。根据第一段第二句“...yet it's one of the last ones we think to use as adults.”可推知,成年人很难将“hello”说出口。故选C项。
2.D 解析:句意理解题。根据第二段画线句子并结合上文的“This exchange of greetings raised the kids' productivity.”可知,师生之间相互问候,从而使学校发生巨大变化:从无人情味到有人情味,师生关系融洽了,从而使更多的学生参与课堂并进而取得更好的成绩。故选D项。
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