（精品推薦）2020屆高考二輪復習英語學案--專題二十 閱讀表達
78. fill in the blank in paragraph 5 with proper words. （within 5 words）
79. list three effects of smiling on health according to the text. （within 8 words）
① ② ③
80. translate the underlined sentence in paragraph 3 into chinese.
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（.天津卷原創解析）第一節:閱讀表達（共5小題;每小題2分,滿分10分）
閱讀下面短文,并按照題目要求用英語回答問題.
almost everybody in america will spend a part of his or her life behind a shopping cart（購物手推車）. they will, in a lifetime, push the chrome-plated contraptions many miles. but few will know—or even think to ask—who it was that invented them.
sylvan n. goldman invented the shopping cart in 1937. at that time he was in the supermarket business. every day he would see shoppers lugging（吃力地攜帶） groceries around in baskets they had to carry.
one day goldman suddenly had the idea of putting baskets on wheels. the wheeled baskets would make shopping much easier for his customers, and would help to attract more business.
on june 4, 1937, goldman’s first carts were ready for use in his market. he was terribly excited on the morning of that day as customers began arriving. he couldn’t wait to see them using his invention.
but goldman was disappointed. most shoppers gave the carts a long look, but hardly anybody would give them a try.
after a while, goldman decided to ask customers why they weren’t using his carts. “don’t you think this arm is strong enough to carry a shopping basket?” one shopper replied.
but goldman wasn’t beaten yet. he knew his carts would be a great success if only he could persuade people to give them a try. to this end, goldman hired a group of people to push carts around his market and pretend they were shopping! seeing this, the real customers gradually began copying the phony（假冒的） customers.
as goldman had hoped, the carts were soon attracting larger and larger numbers of customers to his market. but not only did more people come—those who came bought more. with larger, easier-to-handle baskets, customers unconsciously bought a greater number of items than before.