更多"These pollutants can be （）hundreds "的相关试题:
[单项选择]Pollutants in the atmosphere can cause acid rain (rain with high acidity levels). While acid rain in itself cannot significantly affect the acidity of bodies of water into which it falls, it can greatly increase the acidity of nearby lakes by increasing the amount of decaying matter on a forest floor. A recent increase in the acidity of the water in Forest Lake, therefore, surely indicates that the rain failing nearby has become more acid.
Which of the following, if tree, most seriously weakens the argument
A. Even in areas without significant amounts of acid rain, most lakes in regions with vegetation similar to the vegetation around Forest Lake have acidity levels higher than those of other lakes.
B. Recent air-quality tests in the region around Forest Lake have revealed a slight increase in the amount of pollutants in the air.
C. Large-scale logging, which was recently begun in the forest surrounding Forest Lake, has increased the amount of decaying matter on the forest floor.
D. There is some disagreement among scientists about exactly how pollutants in the atmosphere cause acid rain.
E. (E) Decaying matter exists on all forest floors and is an important factor in maintaining the healthy growth of the forests.
[单项选择]According to the passage, Americans can accept everything EXCEPT that ______.
A. one cannot drive a car
B. one heats his wife
C. one always gets drunk
D. one doesn’t have a car of his own
[填空题]Pollutants from cars cause ______ , which can damage buildings and pollute rivers.
[简答题]You can have hundreds of destinations to choose from，because the One world network covers the，globe．And，as you travel around the world，you will have the support Of 260000 people from all our airlines，who are devoted to the success of your journey，helping you make smooth transfers and offering support along the way．
[填空题]You can find the departure and arrival time of every specific train from the ______ on the wall of the railway station. (table, time)
[填空题]Would you know how to help
Every year, thousands of drivers and passengers die in the few minutes after an auto collision. Many of these victims would survive if only the first people on the scene knew how to react in emergencies. How can you help an accident victim, even before treating injuries Turn off the ignitions (点火装置) of any wrecked (遇难的) cars to reduce the risk of fire. This simple step could keep a bad collision from becoming much worse. Remember: check for fire, downed wires or spilled gasoline before getting too close to a wreck. And never move an injured driver to get to his keys. Learn more emergency warning in the Crash Course Book, free from Shell station. Pick one up at your nearest Shell station or call 376-200.
1) Many of these victims died because the first people on the scene did not know how to (46) .
2) You should turn off the ignitions of any wrecked cars in order to reduce the (47) , then you should check for fire,
[单项选择]
W: David said he bought a new car for five thousand dollars.
M: What kind is it
W: A BMW. I’m not sure which model.
M: Are you sure A BMW for five thousand Sounds pretty cheap to me!
What does the man think about the price of the car（ ）.
A. Reasonable.
B. Too high.
C. Unbelievabl
[单项选择]Dogs have been man’s best friends (41) thousands of years. Many stories are told about how brave dogs helped the people (42) trouble. With the help of the dogs, many people lost in the snow were able (43) home.
Dogs have also helped in the research work in many fields of science. The first world’s space-traveler (44) a dog named Laika. It was (45) in a man-made earth (46) in 1957 by Russian scientists.
Dogs have been film stars, (47) . A dog called Lassie was the star in quite a few American films. Dogs can hear and smell (48) than man, but they can not see so well. A dog may (49) for about 12 or 13 years. A thirteen-year-old child is not (50) grown up, but a thirteen-year-old dog is a very old dog indeed.
A. sent
B. sending
C. sent up
