[题目] He’s posted the letter, he?A. isn’t B. doesn’tC. hasn’t D. wasn’t 题目和参考答案——青夏教育精英家教网—

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【题目】 He’s posted the letter, _________ he?

A. isn’t B. doesn’t

C. hasn’t D. wasn’t

【答案】C

【解析】试题分析：考察反义疑问句。反义疑问句尾部用什么词取决于主句的助词，本句中的助词和主语在一起缩写成了he’s，因而排除BD选项。该句意思为：他已经投寄了那封信，不是么？has能表达已经的意思，根据句意，故选C

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They are extremely necessary for helping us to find and maintain a balance between life and work. However, they are slipping away from us. We have become far too serious. The only ones who still enjoy humor, laughter, fun and play to the fullest are young children. Children tend to laugh an average of 200 times a day. For adults, however, it is a totally different story.

In the 1950s people laughed on average 18 times a day. Today, we are lucky if we average between 4-6 times a day.

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Socializing with friends and relatives was much looked forward to. However, this is no longer the case. In fact, the majority of people can hardly find time, nor do they have the inclination towards socializing outside home. They turn to electronic media such as television, computers, the Internet, videos, CDs, and audio equipment, which can provide them with instant self-entertainment at the push of a button.

The workplace does not fare(进展) much better. Due to the pressures to produce more in the same or fewer hours available and to compete, for example, in a manufacturing field with cheaper labor elsewhere in the world, humor and laughter in the workplace have gradually eroded（逐渐毁坏） away.

I have developed a real appreciation, perhaps closer to a strong desire for the power of humor and laughter. This encouraged me to write my first book titled “The Power of Humor” and subsequently my second book titled “Kids Say the Goggonest Things” based on the natural humor, laughter, play and fun that kids experience and they freely share with parents, grandparents and teachers.

From writing about humor and laughter, people start to ask me to speak up for them. To date, I have developed a number of humor-laughter topics that I use in my keynote presentations. You are invited to subscribe to my free monthly e-magazine “The Humormeister’s Forum” by clicking on the Free Humor E-zine navigation button on the website.

【1】According to the author, laughter is leaving us partly because ________.

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