The reason ______ most Chinese have healthy white teeth is ______ they eat a hea
题型：不详难度：来源：
The reason ______ most Chinese have healthy white teeth is ______ they eat a healthy diet. | A．why; that | B．why; because | C．that; that | D．for; that |
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答案
| A |
解析
| 考查定语从句及名词性从句。句中why引导定语从句，先行词the reason在从句中作原因状语；that引导表语从句，故选A。 |
举一反三
________________, I was so careless that it got loose and was hit by a car.| A．While I walked the dog | B．While I walking the dog | | C．While walking the dog | D．While I am walking the dog . |
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Wang kun : Have you looked at a map?
Wang wei : What did you say just now?
Wang kun : I asked you ______________.| A．whether you have looked at a map | | B．whether you had looked at a map | | C．whether have you looked at a map | | D．whether had you looked at a map |
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a reward of $1,000 will be given to can provide any clues to the case which has been investigated by the police for nearly half a year.| A．whoever | B．whomever | C．anyone | D．who |
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— You can say that again．| A．Those who have; visiting | B．Whoever has; visiting | | C．Those who have; to be visited | D．Whoever has; to be visited |
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— No one can answer the question _______ we can complete the task in time, do you know?
— Yes, and this is because we don’t know the way _______ the scientist used last time．| A．whether; which | B．if; which | | C．whether; in which | D．if; in which |
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