forests. Stone houses would have indicated that stones were easy to D in the desert, daytime temperatures are lower than nighttime temperatures theae ver a closer look at the houses would have told the traveler even more a 34. The main idea of Para. 3 and 4 is that People used to build houses that fitted the climate of their areas. For example, A heavy snow does not stay on steeproofs in desert regions there is a big difference between daytime and nighttime B. ordinary glass does not insulate well temperatures. Therefore, many desert people built houses with very thick walls C. fuel is used to produce electricity in the houses. For example in the win D the supply of fuel affects home building the thick walls absorbed the sun's warmth during the day and radiated the heat at night. Desert people were relatively comfortable in their homes, or residences, at all 35. What does"radiate"(Para. 2)mean? times because they built them to fit the desert climate. Then the supply of fuel for electricity became both cheap and easy to get. The effect on housing was immediate. People began to build their homes according to fashion Passage Four instead of utility. Houses no longer reflected the availability of building materials Questions 36 to 40 are based on the following passage: It is hard to track the blue whale, the oceans largest creature, which has almost Houses with steep roofs could be found in the tropics (*itt h the wam been killed off by commercial whaling and is now listed as an endangered species. regions of the Earth, even though these pointed roofs originated (*E, P-t)in Attaching radio devices to it s dificult, and visual sightings are too unreliable to snowy regions of the world. eavy snow falls off a slanted(歪斜的)roof. Anot give real insight into its behavior example is the use of glass. Houses made almost completely of glass could be found So biologists were delighted early this year when, with the help of the Navy in very cold places. Yet ordinary glass does not insulate(s*)well because it they were able to track a particular blue whale for 43 days, monitoring its sounds. neither keeps out cold air nor keeps in warm air. As long as fuel was cheap and easy This was possible because of the Navy's fomerly top-secret system of underwater to get, people could build any type of house any place. (297 words) 31. What are two things that a traveler could leam about an area by looking at the civilian scientists after the Cold War as the Navy starts to share and partly uncove its global network of underwater listening system built over the decades to track the A. The climate is poor and so are the people living in it. ships of potential enemies. B. The climate in the area and the kind of building materials easy for the people Earth scientists announced at a news conference recently that they had used the system for closely monitoring a deep-sea volcanic eruption (4&)for the first time C. There is a forest nearby and they are on the top of a mountain. and that they plan similar studies D. They are near a house and its owner is not there at the moment. Other scientists have proposed to use the network for tracking ocean currents and measuring changes in ocean and global temperatures 32. The main idea of Para. I is that The speed of sound in water is roughly one mile a second -slower than A. wood is a forest product. through land but faster than through air. What is most important, different layers of B. there are no stones in forests ocean water can act as channels for sounds, focusing them in the same way a C houses used to tell about a region. stethoscope (Tit)does when it caries faint noises from a patient's chest to a D. people used to travel to learn about houses doctor,s ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles. 33. The main idea of Para. 2 is that (words: 279) A. thick walls absorb heat from the sun B people built houses to fit the climate chiefly about C. people are comfortable in their houses protect an endangered marine use of a military detection syster4 nearby forests. Stone houses would have indicated that stones were easy to get. However, a closer look at the houses would have told the traveler even more about the area. People used to build houses that fitted the climate of their areas. For example, in desert regions there is a big difference between daytime and nighttime temperatures. Therefore, many desert people built houses with very thick walls. These thick walls served a useful purpose in the houses. For example, in the winter the thick walls absorbed the sun's warmth during the day and radiated the heat at night. Desert people were relatively comfortable in their homes, or residences, at all times because they built them to fit the desert climate. Then the supply of fuel for electricity became both cheap and easy to get. The effect on housing was immediate. People began to build their homes according to fashion instead of utility. Houses no longer reflected the availability of building materials or climate. Houses with steep roofs could be found in the tropics (热带地区), the warm regions of the Earth, even though these pointed roofs originated (来自，产生) in snowy regions of the world. Heavy snow falls off a slanted (歪斜的) roof. Another example is the use of glass. Houses made almost completely of glass could be found in very cold places. Yet ordinary glass does not insulate (绝缘) well because it neither keeps out cold air nor keeps in warm air. As long as fuel was cheap and easy to get, people could build any type of house any place. (297 words) 31. What are two things that a traveler could learn about an area by looking at the houses? A. The climate is poor and so are the people living in it. B. The climate in the area and the kind of building materials easy for the people to C. There is a forest nearby and they are on the top of a mountain. D. They are near a house and its owner is not there at the moment. 32. The main idea of Para. 1 is that ________. A. wood is a forest product. B. there are no stones in forests. C. houses used to tell about a region. D. people used to travel to learn about houses. 33. The main idea of Para. 2 is that ________. A. thick walls absorb heat from the sun B. people built houses to fit the climate C. people are comfortable in their houses D. in the desert, daytime temperatures are lower than nighttime temperatures 34. The main idea of Para. 3 and 4 is that ________. A. heavy snow does not stay on steep roofs B. ordinary glass does not insulate well C. fuel is used to produce electricity D. the supply of fuel affects home building 35. What does "radiate"(Para. 2) mean? A. give off B. absorb C. gather D. consume Passage Four: Questions 36 to 40 are based on the following passage: It is hard to track the blue whale, the ocean's largest creature, which has almost been killed off by commercial whaling and is now listed as an endangered species. Attaching radio devices to it is difficult, and visual sightings are too unreliable to give real insight into its behavior. So biologists were delighted early this year when, with the help of the Navy, they were able to track a particular blue whale for 43 days, monitoring its sounds. This was possible because of the Navy's formerly top-secret system of underwater listening devices spanning the oceans. Tracking whales is but one example of an exciting new world just opening to civilian scientists after the Cold War as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies. Earth scientists announced at a news conference recently that they had used the system for closely monitoring a deep-sea volcanic eruption (爆发) for the first time and that they plan similar studies. Other scientists have proposed to use the network for tracking ocean currents and measuring changes in ocean and global temperatures. The speed of sound in water is roughly one mile a second — slower than through land but faster than through air. What is most important, different layers of ocean water can act as channels for sounds, focusing them in the same way a stethoscope (听诊器) does when it caries faint noises from a patient's chest to a doctor's ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles. (words: 279) 36. The passage is chiefly about __________. A) an effort to protect an endangered marine species B) the civilian use of a military detection system