After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report the damage and death toll(死亡人数)could have been much worse.

　　More than 60 people died in this earthquake. By comparison ,an earthquake of similar intensity that shook America in 1988 claimed 25,000 victims.

　　Injuries and deaths. were relatively less in Los Angeles because the quake occurred at 4:31 a. m. n a hoIiday, when traffic was light on the city’s highways. In addition, changes made to the construction codes in Los Angeles during the last 20 years. have strengthened the city’s buildings and highways, making them more resistant to quakes.

　　Despite the good news, civil engineers aren’t resting on their successes. Pinned to their drawing boards are blueprints(蓝图)for improved quake-resistant buildings, The new designs should offer even greater security to cities where earthquakes often take place.

　　In the past, making structures quake-resistant meant firm yet flexible materials, such as steel and wood, that bend without breaking. Later, people tried to lift a building off its foundation, and insert rubber and steel between the building and its foundation to reduce the impact of ground vibrations. The most recent designs give buildings brains as well as concrete and steel supports. Called smart buildings, the structures respond like living organisms to an earthquake's vibrations. When the ground shakes and the building tips forward, the computer would force the building to shift in the opposite direction.

　　The new smart structures could be very expensive to build. However, they would save many lives and would be less likely to be damaged during earthquakes.

　　1. One reason why the loss of lives in the Los Angeles earthquake was comparatively low is that _________.

　　A. improvements had been made in the construction of buildings and highways

　　B. it occurred in the residential areas rather than on the highways

　　C. large numbers of Los Angeles residents had gone for a holiday

　　D. new computers had been installed in the buildings

　　Best Answer:A

　　详解：答案A。从第三段“洛杉矶在过去的20年中针对建筑规范所做的改变巩固了该市的建筑物和公路，使它们更加抗震”中可看出应选A。

　　2.The function of the computer mentioned in the passage is to _______.

　　A. help strengthen the foundation of the building

　　B. predict the coming of an earthquake with accuracy

　　C. counterbalance an earthquake’s action on the building

　　D. measure the impact of an earthquake’s vibrations

　　Best Answer:C

　　详解：答案C。见第五段最后一句：When the ground shakes acid the building tips forward, the computer would force the building shift in the opposite direction，可知C项正确。

　　3.The smart buildings discussed in the passage_______.

　　A. would cause serious financial problems

　　B. would be worthwhile though costly

　　C. would increase the complexity of architectural design

　　D. can reduce the ground vibrations caused by earthquakes

　　Best Answer:B

　　详解：答案B。作者最后指出这种新型智能结构尽管很昂贵，但它们在地震发生过程中会拯救很多生命且不太容易受损。故选B项。

　　4. It can be inferred from the passage that in minimizing the damage caused by earthquakes attention should be focused on______.

　　A. the increasing use of rubber and steel in capital construction

　　B. the reduction of the impact of ground vibrations

　　C. the development of flexible building materials

　　D. early forecasts of earthquakes

　　Best Answer:B

　　详解：答案B。文中指出“过去抗震的方法是使用坚固且具有韧性的建筑材料，后来人们在建筑主体和基础之间加人橡胶和钢筋以减小地面的震力”。

　　5.The author’s main purpose in writing the passage is to ______.

　　A. compare the consequences of the earthquakes that occurred in the U. S.

　　B. encourage civil engineers to make more extensive use of computers

　　C. outline the history of the development of quake-resistant building materials

　　D. report new developments in constructing quake-resistant buildings

　　Best Answer:D

　　详解：答案D。作者的写作目的旨在介绍抗震建筑的新发展。