解析 1.dentist 考查名词。句意:我想成为一名牙医,帮助有牙齿问题的人。根据句意和句子结构可知,空前为冠词a,因此空格处应该为名词,且为单数形式,再根据空后的 "help people with teeth problems" 和首字母d提示,可联想到可数名词dentist,意为,牙医。故答案为:dentist。
C Most people are born with two sets of teeth. They use baby teeth to eat as children. As they become adults, the baby teeth are replaced with permanent teeth. By the age of 65, 30 percent of people worldwide have lost all their teeth. As a result, it is not convenient for them ...
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Kazoo has a simple structure. The flute is big at one end and small at the other. When playing, you should hold the big head in your mouth without blowing, but hum a tune with your throat. The vibration of the...
Our bodies keep the vitamin D in our bones and teeth. Then we lose vitamin D as we work and exercise during the day. But our bodies can’t make vitamin D. So we have to get it from outside of our bodies. Where can a person ...
I do not like visiting the dentist at all.As a child, I 32 my teeth carefully and cleaned them twice a day.When I grew up, however, I 33 visit the dentist. It all started with my wisdom teeth (智齿). These teeth grow at the back of your mouth,34 your other teeth have been ...
(1)B.根据"Long ago,as people got older,there was something wrong with their teeth and it would be very painful.很久以前,随着年龄的增长,人们的牙齿出现了问题,这将是非常痛苦的",结合选项,可知很久以前,人们的牙齿出现了问题,为了避免牙痛,他们把牙齿拔掉了。故选:B。(2)F.根据"Later people learned...
advertisers must also place their ads in the right medium. Obviously, cost will play __(1)___ big part in this decision. Television adverts are expensive to make __(2)___to show. You have to be a big corporation with a big budget to afford television ads. Advertisements in newspapers...
the native peoples of Siberia 西伯利亚本土民族 牛津词典 the life of the common people 普通人的生活 牛津词典 It was felt that the government was no longer in touch with the people. 人们觉得政府已脱离了民众。 牛津词典 a meeting with business people and bankers 与商界和银行界人士的会晤 牛津词典...
their teeth with some small tree branches (树枝).About 800 years ago,people made a kind of brushes with pig hair and bamboo.It might (4) the world's earliest form of toothbrushes.As time went (5) ,the forms of toothbrushes changed.For example,people chose horse-tail...