From the first sentence of the passage, we learn that Why is acid rain little understood?

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问题 From the first sentence of the passage, we learn that______
Why is acid rain little understood?______

选项 A、Because it is a new phenomenon
B、Because it is not frequent enough
C、Because its formation is complex
D、Because it is difficult to study it

答案C

解析第三段第二句指出，由于大气中酸雨形成的化学反应很复杂，几乎不为人们所了解。

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考研英语一

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From the first sentence of the passage, we learn that______ Why is acid rain little understood?______

考研英语一

Peopleinbusinesscanuseforesighttoidentifynewproductsandservices,aswellasmarketsforthoseproductsandservices.

Inthefollowingtext,somesentenceshavebeenremoved.ForQuestions41-45,choosethemostsuitableonefromthelist(A、B、C、

Whichofthefollowingisthemostappropriatetitleforthepassage,basedonitscontent?Concerningliteraryrealismasment

Inthefollowingtext,somesentenceshavebeenremoved.ForQuestions41-45,choosethemostsuitableonefromthelist(A、B、C、

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(46)Afavouritepredictionofenvironmentalismhasbittenthedust—toomanynaturalresources,ratherthantoofew,arethecaus

Investmentinthepublicsector,suchaselectricity,irrigation,publicservicesandtransport(excludingvehicles,shipsandp

Intherelationshipofeducationtobusinessweobservetodayafinestateofparadox.Ontheonehand,theemphasiswhichmost

—Excuseme,sir.Wouldyoudomeafavor?—Ofcourse.Whatisit?—I______ifyoucouldtellmehowtofilloutthisform.

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From the first sentence of the passage, we learn that Why is acid rain little understood?