This computer is of good quality. If it ___________ break down within the first year, we would repair it at our expense.

A．would            B．could             C．should            D．might

 

【答案】

C

【解析】

試題分析：考查條件句的虛擬語(yǔ)氣。本題是一個(gè)與將來(lái)事實(shí)相反的虛擬語(yǔ)氣。條件句中有三種情況，過(guò)去時(shí)；were to do ;should+動(dòng)詞原形，主句使用“情態(tài)動(dòng)詞+動(dòng)詞原形”；句意：這種電腦的質(zhì)量很好，如果在第一年中壞掉，我們會(huì)免費(fèi)為你維修。故C正確。

考點(diǎn)：考查條件句的虛擬語(yǔ)氣

點(diǎn)評(píng)：條件句中的虛擬語(yǔ)氣，如果過(guò)去事實(shí)相反，條件句中使用過(guò)去完成時(shí)，主句使用“情態(tài)動(dòng)詞+have done”;如果主句與現(xiàn)在事實(shí)相反，條件句中使用過(guò)去時(shí)，be動(dòng)詞使用were,主句中使用“情態(tài)動(dòng)詞+動(dòng)詞原形”；如果與將來(lái)事實(shí)相反，條件句中有三種：過(guò)去時(shí)；were to do ;should+動(dòng)詞原形，主句使用“情態(tài)動(dòng)詞+動(dòng)詞原形”；要特別注意如果省略了if，句子要使用部分倒裝的形式，把助動(dòng)詞，be動(dòng)詞，情態(tài)動(dòng)詞提之主語(yǔ)前。

 

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A．SoonB．AfterC．Later onD．Soon after
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A．teachB．play withC．studyD．enjoy
【小題4】
A．forgotB．rememberedC．finished D．observed
【小題5】
A．showedB．pushedC．introducedD．threw
【小題6】
A．newsB．booksC．knowledgeD．dictionaries
【小題7】
A．employedB．a(chǎn)skedC．madeD．watched
【小題8】
A．beardB．learnedC．readD．told
【小題9】
A．toldB．was toldC．saidD．was said
【小題10】
A．somethingB．everythingC．nothingD．a(chǎn)ll
【小題11】
A．didB．hadC．was doingD．was having
【小題12】
A．but B．a(chǎn)ndC．a(chǎn)s D．while
【小題13】
A．bringingB．to bringC．takingD．to take
【小題14】
A．resultB．way C．ideaD．opinion
【小題15】
A．knewB．sawC．learnedD．found
【小題16】
A．givenB．followedC．saidD．taken
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A．oilB．saltC．waterD．food
【小題18】
A．carefullyB．slowlyC．easilyD．quietly
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A．headB．faceC．eyesD．ears
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With all the collected information, the researchers came up with a new model for how the machine operated. The model has 29 of the 30 known gears and five more that were probably there but never found. Also，the new picture adds a previously undiscovered spiral dial (螺旋刻度盤) to the back of the machine near the bottom. A hand moving around the dial could have pointed to eclipses over a period of 18 years.

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C. a political report

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A. New research on calculating the positions of planets.

B. A popular way of computing eclipses of the sun and moon.

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B. Scientists made great progress in predicting eclipses of the sun and moon.

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D. expected it to be used in modern scientific research

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50. What is among the best possible ways to help save farmers’ money?

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