题目内容

The naughty boy was muddy because he _______ soccer in the rain all afternoon.

A. has been playing B. had played

C. had been playing D. was playing

C

【解析】

试题分析：考查动词时态辨析。句意：那个顽皮的还在一身泥因为他整个下午都在雨中踢足球了。A现在完成进行时；B过去完成时；C过去完成进行时；D过去进行时，完成进行时表一段时间里持续不间断的进行某动作，本句结果是过去时，原因也应该用过去时故选B。

考点：考查动词时态辨析

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假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：

1．每处错误及其修改均仅限一词；

2．只允许修改10处，多者(从第11处起)不计分。

The saying that practice makes perfect mean that after you have plenty of practice in what you were doing，you will be perfect in it．If you want improve your study and work，remembering that the most important thing is how to put the knowledge you have learned into practice．For example，when learning a language，though you can make full use for your talent，practice is necessary．If you only learn grammar rules by the heart and don’t do enough exercise，it’s certain that you can’t understand the language perfectly．But if you real practise a lot，maybe you will understand them much better．In this way，you can apply that you have learned better．

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Scientists in Australia have shown that a chemical called nitric oxide could increase the chances of surviving a poisonous snakebite.The scientists injected rats with a deadly amount of snake venom.Then they rubbed an ointment(软膏)containing nitric oxide on the skin around the injection site.The study found that the rats lived about one-third longer than if nitric oxide had not been used.But the treatment had to be started very quickly.

Dirk van Helden led the research.He says the nitric oxide ointment also showed promise in humans.The study appeared earlier this year in the journal Nature Medicine.Scientists say the findings could help save many lives.A recent study found that poisonous snakes cause as many as ninety-four thousand deaths worldwide each year.But Ulrich Kuch of the Biodiversity and Climate Research Center in Frankfurt,Germany,says that number appears to be low.

Mr Kuch says many deaths could be prohibited if snakebite victims are treated correctly,but they often go to traditional healers or do not seek any help at all.He said,“Sometimes it’s because there is no treatment available—no antivenom(抗蛇毒血清),which is the specific(特殊的)drug to treat snakebites—or health care staff do not know how to treat snakebites,and sometimes its because transportation to get to a health facility is not available or too expensive.

Here is no single antivenom that can be used to treat all snakebites.The antivenom must be specific to the kind of snake that bit the person.In some countries the treatment is costly,while in others there is no such treatment.

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A.Snakebite deaths around the world.

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C.examined. D.prevented.

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C.Antivenom is extremely expensive all over the world.

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But he still went on working and writing music pieces. To people’s surprise, some of his best pieces were written after he lost his hearing.

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D．Both B and C

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