閱讀判斷(第16～22題,每題1分，共7分)

　　下面的短文后列出了7個句子，請根據(jù)短文的內(nèi)容對每個句子做出判斷：如果該句提供的是正確信息，請選擇A；如果該句提供的是錯誤信息，請選擇B；如果該句的信息文中沒有提及，請選擇C。

　　A Great Quake Coming?

　　Everyone who lives in San Francisco knows that earthquakes are common in the bav area．Theyhad keen devastating in 1906，for example，a major quake destroyed about 28．000 buildings andkilled hundreds，perhaps thousands of people． Residents now wonder when the next"big one"willstrike．It's bound to happen someday．At least seven active fault(斷層)lines run through the SanFrancisco area．Faults are places where pieces of earth's crust(地殼)slide past each other．Whenthese pieces slip，the ground shakes．

　　To prepare for that day。scientists are using new techniques to reanalyze the 1906 earthquake and predict how bad the damage might be when the next one happens. One new finding about the 1906 quake is that the San Andreas Fault split apart faster than scientists had assumed at the time．During small earthquakes，faults rupture at about 2．7 kilometersper second．During bigger quakes，however，ruptures can happen at rates faster than 3.5 kilometersper second．

　　At such high speeds，massive amounts of pressure build up，generating underground waves that can cause more damage than the quake itself．Lucky for San Fancisco，these pressure pulses(脈沖) traveled alway from the city duffng the 1906 event．As bad as the damage was，it could have been farWorse．

　　Looking ahead，scientists are trying to predict when the next major quake will occur.Records show that earthquakes were common before 1906 event． Since then，the area has been relatively quiet．Pattems in the data，however，suggest that the probability of a major earthquake striking the bay area before 2032 is at least 62 percent．

　　New buildings in san Francisco are quite safe in case of future quakes．Still，more than 84 percent of the city's buildings are old and weak．Analyses suggest that another massive earthquake would cause extensive damage．

　　People who live there today tend to feel safe because San Francisco has remained pretty qmet for a while．Accoeding to the new research，however，it's not a matter of whether the big one will hit. It's just a matter of when．

　　16. The San Francisco area is located above several active fault lines．

　　A．right

　　B．wrong

　　C．not mentiond

　　17．The 1906 earthquake in San Francisco is the most severe one in American history．

　　A．fight

　　B．wrong

　　C．not mentioned

　　18．The highest speed of fault ruptures in the 1906 quake was more than 3．5 kilometers per second

　　A．fight

　　B．wrong

　　C．not mentioned

　　19．Earthquakes rarely happened in San Francisco before 1906．

　　A．fight

　　B．wrong

　　C．not mentioned

　　20．San Francisco is fully prepared for another big earthquake．

　　A．right

　　B．wrong

　　C．not mentioned

　　21．Scientists will be able to predict the exact time of an earthquake soon．

　　A．right

　　B．wrong

　　C．not mentioned

　　22．A major earthquake striking San Francisco someday is inevitable．

　　A．right

　　B．wrong

　　C．not mentiond

　　參考答案及解析

　　16．A[解析]文章第一段的倒數(shù)第三句就說到至少有七條地質(zhì)斷層穿越舊金山而過。

　　17．C[解析]文章雖然說舊金山大地震的破壞力非常之大，但是沒有明確指出其程度是美國歷史之最，所以是"not ment：ionecl"。

　　18．A[解析]文章中說到較大一點的地震其速度至少會超過3500米，而問題為舊金山大地震時斷層滑動最快的速度可以到達(dá)多少，根據(jù)邏輯推斷，應(yīng)該是超過3500米，所以正確。

　　19．B [解析]文章第五段的第二句話就說到1906年前地震頻繁，所以題干錯誤。

　　20．B [解析]雖然文章的五、六兩段都闡述了科學(xué)家們做的積極準(zhǔn)備，以及新建建筑物的牢固程度，但之后又話鋒一轉(zhuǎn)，說還有84％的老樓不夠安全，而在最后一段，也提及人們的心態(tài)似乎比較放松，沒有較多的憂患意識，因此來判斷該題不正確。

　　21．C[解析]第五段的最后一句話說科學(xué)家們預(yù)測到62％地震發(fā)生的概率，但是這并不意味著科學(xué)家們就能預(yù)測出準(zhǔn)確的時間，最后一段也說明這是個時間問題，而沒有明確說明時間，所以該題選擇沒有提及。

　　22．A[解析]本題如上題，科學(xué)家們預(yù)測出了地震發(fā)生的概率為62％，同時最后一句話說只是時間問題，可見，大地震襲擊舊金山是不可避免的。

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