練習(xí):
1． What does “Such natural disasters” in the first paragraph refer to?
A Sudden，heavy rainfall．
B Earthquakes．
C Water erosion．
D Landslides．
2． Which of the following statements is true of landslides?
A The initial movement is hard to spot．
B They start with a movement of a few particles of soil or rock．
C They can be destructive in a matter of hours or minutes．
D All of the above．
3． Why do researchers develop a new device to monitor signs of landsides?
A Because the new device can measure the site directly．
B Because the new device can be sunk into boreholes or fixed above ground．
C Because the common methods can cause false alarms．
D Because the common methods are useless．
4． Which of the following statements is NOT true of the device，according 1o Paragraph4?
A It is filled in with gravel．
B It consists of a steel pipe．
C It is dropped into a horehole filled in with gravel．
D It is connected to a sensor on the surface．
5． According to the context，what does the word “positives” in the fifth paragraph mean?
A Positive electric charges．
B Evidences．
C Warnings．
D Predictions．
答案與題解：
1． D 短文第一段的第一句告訴我們，英國研究人員正在測試一種儀器，這種儀器可以通過監(jiān)測土壤的振動來預(yù)警山崩。該段最后一句說，這種災(zāi)難經(jīng)常在一些遭受自然災(zāi)害的國家發(fā)生，這些自然災(zāi)害包括sudden，heavy rainfall和earthquakes以及water erosion。所以D是正確選擇。
2． D A、B、C的內(nèi)容都可在第二段中找到。所以D是正確答案。
3． C 第三段的第一和第二句告訴我們，最為普通的監(jiān)測山崩方法是對山坡形狀變化的觀察，有兩種觀察方式；第三句說，因為山坡形狀的變化不一定導(dǎo)致山崩，所以兩種方法都會有虛假的預(yù)警。因此，C是正確答案。
4． A B、C、D所述內(nèi)容都可在第四段中找到。The borehole is filled in with gravel around the pipe．在被鑿出的洞里填充沙礫，圍在鋼管四周。不是在鋼管里填充沙礫。所以A是錯誤的說法，是正確的選擇。
5． B positives在此用作名詞，意思是：被證實的因素或特點，可以理解為證據(jù)。
1． What does “Such natural disasters” in the first paragraph refer to?
A Sudden，heavy rainfall．
B Earthquakes．
C Water erosion．
D Landslides．
2． Which of the following statements is true of landslides?
A The initial movement is hard to spot．
B They start with a movement of a few particles of soil or rock．
C They can be destructive in a matter of hours or minutes．
D All of the above．
3． Why do researchers develop a new device to monitor signs of landsides?
A Because the new device can measure the site directly．
B Because the new device can be sunk into boreholes or fixed above ground．
C Because the common methods can cause false alarms．
D Because the common methods are useless．
4． Which of the following statements is NOT true of the device，according 1o Paragraph4?
A It is filled in with gravel．
B It consists of a steel pipe．
C It is dropped into a horehole filled in with gravel．
D It is connected to a sensor on the surface．
5． According to the context，what does the word “positives” in the fifth paragraph mean?
A Positive electric charges．
B Evidences．
C Warnings．
D Predictions．
答案與題解：
1． D 短文第一段的第一句告訴我們，英國研究人員正在測試一種儀器，這種儀器可以通過監(jiān)測土壤的振動來預(yù)警山崩。該段最后一句說，這種災(zāi)難經(jīng)常在一些遭受自然災(zāi)害的國家發(fā)生，這些自然災(zāi)害包括sudden，heavy rainfall和earthquakes以及water erosion。所以D是正確選擇。
2． D A、B、C的內(nèi)容都可在第二段中找到。所以D是正確答案。
3． C 第三段的第一和第二句告訴我們，最為普通的監(jiān)測山崩方法是對山坡形狀變化的觀察，有兩種觀察方式；第三句說，因為山坡形狀的變化不一定導(dǎo)致山崩，所以兩種方法都會有虛假的預(yù)警。因此，C是正確答案。
4． A B、C、D所述內(nèi)容都可在第四段中找到。The borehole is filled in with gravel around the pipe．在被鑿出的洞里填充沙礫，圍在鋼管四周。不是在鋼管里填充沙礫。所以A是錯誤的說法，是正確的選擇。
5． B positives在此用作名詞，意思是：被證實的因素或特點，可以理解為證據(jù)。