[单项选择]What evidence do people from the west give to show that a higher speed limit is safe
A. The long roads between the cities.
B. The modem turbo-charged engine.
C. The economic advantage.
D. The current policies of Germany and Australia.

[填空题]What do cars give Americans
They give Americans ______.

[简答题]Yet few people ask from books what books can give us. Most commonly we come to books with blurred and divided minds, asking of fiction that it shall be true, of poetry that it shall be false, of biography that it shall be flattering, of history that it shall enforce our own prejudices. If we could banish all such preconceptions when we read, that would be an admirable beginning. Do not dictate to your author; try to become him. Be his fellow worker and accomplice. If you hang back, and reserve and criticize at first, you are preventing yourself from getting the fullest possible value from what you read. But if you open your mind as widely as possible, then signs and hints of almost imperceptible fineness, from the twist and turn of the first sentences, will bring you into the presence of a human being unlike any other. Steep yourself in this, acquaint yourself with this, and soon you will find that your author is giving you, or attempting to give you, something far more definite.

[填空题]What advice do doctors give about vitamin C
Doctors recommend vitamin C to ______.

[单项选择]
As long as we have been on earth, we have used the sea around US. We take from the ocean, and we give to it.
We take fishes from the ocean—millions of kilograms of fish, every year, to feed millions of people. We even use their bones for fertilizer. We take minerals from the ocean. One way to get salt is to place seawater in a shallow basin and leave it until it evaporates. Along with salt, other minerals are left after evaporation. Much gold and silver drift dissolved in the waters of the sea, too. But the sea does not give them up by simple evaporation. Other gifts from the sea are pearls, sponges and seaweed. Pearls become jewelry. Natural sponges become cleaning aids. Seaweed becomes food of many kinds—even candy, and ice cream—as well as medicine. Believe it or not, flesh water is another gift from the sea. We cannot drink ocean waten Some of its contents may cause illness. But ocean water b
A. Human beings have been taking a lot of useful things from the sea and polluting it meanwhile.
B. It is high time that we stopped polluting the sea.
C. Human beings will be dependent on the sea for flesh water one day.
D. The sea is are very generous in giving and we should take from it as much as possibl

[填空题]
As long as we have been on earth, we have used the sea around us. We take from the ocean, and we give to it.
We take fishes from the ocean millions of kilograms of fish, every year, to feed millions of people. (46) . We take minerals from the ocean. One way to get salt is to place seawater in a shallow basin and leave it until it evaporates. (47) . Much gold and silver drift dissolved in the waters of the sea, too. But the sea does not give them up by simple evaporation. Other gifts from the sea are pearls, sponges and seaweed. Pearls become jewelry. (48) . Seaweed becomes food of many kinds--even candy, and ice cream as well as medicine. Believe it or not, fresh water is another gift from the se

• a. We cannot drink ocean water. (49) . But ocean water becomes fresh water when the salts are removed. In the future, we will find ourselves depending more and more on
  

[填空题]What advice do doctors give about vitamin C Doctors recommend vitamin C to ______.

[填空题]What reason do Americans give for the reduction in traffic accidents
____________.