题目内容
—Excuse me. ________ is the sports center from here?
—About five kilometers.
A. How long B. How far
C. How soon D. How often
B
【解析】
试题分析：句意：--打扰了。这个运动中心距离这有多远？--大约有五千米。分析选项：how long 多长时间；how far多远（对距离进行提问）；how soon多久； how often多久一次。通过答语：大约有五千米。表示对距离进行提问，因此用how far.故选B
考点：考查疑问词的用法。
孟建平错题本系列答案
超能学典应用题题卡系列答案Do you love cheese? If you do, this new survey will make you happy. According to the survey, cheese is good for teeth and can protect people from getting cavities (蛀牙) . The survey is made by a group of scientists from the Academy of General Dentistry, an organization from the USA. The scientists find that eating cheese can make the mouth’s PH rise. And the higher the mouth’s PH is, the less likely it is that a person gets cavities. That’s why cheese is good for tooth health.
In order to do the survey, the scientists invited 68 children between 12-15 years old to join the test. They tested the mouth’s PH of the children at first. Then they divided the children into three groups. One group of children ate some cheese, another group of children ate sugar-free yoghurt and the last group of children drank a glass of milk. After that, the scientists tested the mouth’s PH of all the children for several times.
The scientists found that the mouth’s PH of the last two groups of children didn’t change, but the mouth’s PH of children from the first group rose greatly. Besides, the scientists also found that cheese could create a protective layer (保护层) on teeth. The layer could protect the teeth from getting hurt by many bad things.
Information Card
The thing that is good for teeth | 1.___________________ |
The people who did the survey | 2.___________________ |
The people who joined the test | 3.__________________ |
The thing that the scientists test | 4.___________________ |
The thing that the protective layer can do | 5.___________________ |