题目内容
（请给出正确答案）
It can be learned that affordable housing has__
A.increased its home supply
B.offered spending opportunities
C.suffered government biases
D.disappointed the government
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更多“It can be learned that affordable housing has__A.increased its home supplyB.o”相关的问题
It can be learned from Paragraph Five that______.
A．8-hour subjects fared the best among three groups
B．the 6-hour subjects began to decline in the middle of the study
C．half of the 6-hour subjects fell asleep at the computer
D．4-hour subjects were more impaired than 6-hour subjects
According to the American university president,______.
A．everyone understands Einstein's theory today
B．the theory of relativity can be quickly learned by everyone
C．Einstein achieved more than any other scientist in history
D．our ideas about the universe are different today because of Einstein
Software design is a(46) process. It requires a certain amount of fl air on the part of the(47). Design can not be learned from a book . It must be practiced and learnt by experience and study of existing systems. A well(48) software system is straightforward to implement and maintain , easily(49) and reliable. Badly(48) software systems, although they may work are(50) to be expensive to maintain , difficult to test and unreliable.
A．create
B．creative
C．creating
D．created
The students were assigned to write a paper on ________ from the course.
A.what had they learned
B.that had they learned
C.that they had learned
D.what they had learned
SECTION B PASSAGES
Directions: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow.
听力原文： Do you know how astronauts act while whirling through space？ Their food comes in plastic tubes, and they eat it from the tubes. Why？ Spacecraft food must be light and easy to store. It must also be non-spoilable. Many of the foods made for eating in a spaceship have been a success. In fact, everyone may soon be able to have them!
Scientists have learned to keep some foods from spoiling by removing the oxygen from them. This is done by pumping nitrogen gas into them, forcing nearly all the oxygen out. Without oxygen, bacteria cannot grow, nor can the foods spoil.
Freeze-drying is another way to keep food from spoiling. First the foods are frozen. Then they are dried. Fruits, vegetables, meat, and even ice-cream can be freeze-dried. Years later, you can just add milk or water, and they're ready to be eaten. And freeze-dried foods need no refrigeration!
Besides non-spoilable foods, scientists can now make foods from non-food materials. Coal, gas, and other non-foods have been turned into foods. By treating these materials with bacteria, scientists can produce rich proteins.
Experts say that four out of five of the world's people do not eat enough protein. Man-made proteins could help people in needy areas. But it should be a long time before we sit down to a bowl of coal and a glass of gas.
The best title for this selection is
A．Food from Coal and Gas
B．Non-spoiling and New Foods
C．Spacecraft Food
D．The Shortage of Food
Men have learned to ______.
A．go to work with their wives
B．do some of the house work
C．be the bread winners of their families
D．be left alone at home while their wives go out to work
听力原文： Human beings enjoy challenges. Many of them like physical challenges. They ask themselves questions like these: How fast can I run ？ How high can I climb？ How deep can I dive？ How far can I swim？ How long can I hold my breath？ How much can I lift？ How high can I jump？ Because people enjoy challenges, they like to play sports and watch other people play sports. They like climbing, running, diving, lifting, jumping, and so on. Every four years millions of people all over the world enjoy the international sports competitions called the Olympics.
There are challenges that are not physical challenges. There are social and intellectual challenges, too. Leonardo Da Vinci, who lived in Italy during the fifteenth century, enjoyed every possible challenge. He was an artist and painted the well-known picture, the Mona Lisa. He was an inventor who invented a device to let people breathe under water. He was a scientist, and he learned a great deal about human anatomy.
Another kind of challenge faced the Egyptians between 4,000 and 5,000 years ago when they decided to build the first pyramid. They used six million tons of rock. That is enough to build a ten-foot wall around all of France. Four hundred thousand men worked for twenty years to build it.
So, for thousands of years, people accept challenges. Today we still have many challenges before us. Medical science faces the challenges of conquering the many diseases which still attack human beings. Engineers and planners must build new cities and new kinds of transportation. Scientists must develop new forms of energy. And many of us are interested in the challenge of space. We live in an age of challenge.
(30)
A．Intellectual challenge.
B．Social challenge.
C．Physical challenge.
D．Economic challenge.
SECTION B PASSAGES
Directions: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow.
听力原文： There were several important discoveries in the early part of last century that helped geologists develop a more accurate picture of the earth's interior. The first key discovery had to do with seismic waves. Remember they are the vibrations caused by earthquakes. Well, scientists found that they travel thousands of miles through the earth's interior. This finding enabled geologists to study the inner parts of the earth. You see, the studies revealed that these vibrations were of two types: compression, or P waves, and shear, or S waves. And researchers found that P waves travel through both liquids and solids, while S waves travel only through solid matter. In 1906, a British geologist discovered that P waves slowed down at a certain depth but kept traveling deeper. On the other hand, S waves either disappeared or were reflected back. So he concluded that the depth marked the boundary between a solid mantle and a liquid core. Three years later, another boundary was discovered that was between the mantle and the earth's crust. There is still a lot to be learned about the earth. For instance, geologists know that the core is hot. Evidence of this is the molten lava that flows out of volcanoes. But we are still not sure what the source of the heat is.
What is the important discovery about seismic waves mentioned by the instructor？
A．They occur at regular intervals.
B．They can withstand great heat.
C．They travel through the Earth's interior.
D．They can record the Earth's internal temperature.
According to the passage, why was John Glenn's flight considered so successful？
A．It was the first time a rocket had reached orbit and returned.
B．NASA had finally learned how to stay in orbit for a long time.
C．The astronauts were able to move outside the spacecraft.
D．He was able to land on the Moon's surface for the first tim
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