It took them two years to （） the office building.

A、took

B、photos

C、in case of

D、come out

A.choice

B.sometime

C.regular

D.chronic

n rode off to a forest to see how the trees were growing.

In the aftemoon when they were about ten kilometers from their camp, It started to snow. More and more snow fell. Soon Bob could hardly see his hands before his face. He could not find the road. Bob knew there were two roads. One road went to the camp, and the other went to his house. But all was white snow. Everything was the same. How could he take his friends back to the camp？

Bob had an idea. The horses! Let the horses take them back! But what would happen if the horses took the road to his house？ That would be a trip of thirty-five kilometers in such cold weather! It was getting late. They rode on and on. At last the horses stopped. Where were they？ None of them could tell. John looked around. What was that under the tree？ It was one of their tents!

1.John and his two friends went to the forest to watch the trees in the forest.()

2.They could not f1nd their way back because there was only one road to their camp.()

3.It is clear that they wanted the horses to take them to the camp.()

4.The horses stopped because they were tired after running for along way.()

5.The story happened at night when nothing could be seen.()

They could see there was something wrong with both watches. They observed them for several hours before speaking to each other. They both silently found that the German watch was losing 60 minutes and the Japanese are doubled that.

The scientist with the Japanese watch then slowly raised his head and said, "Both watch are out of work, but my watch is right more often than yours, so it's better." The scientist with the German watch went home without saying a word.

The two scientists were quarrelling at the beginning of the story, because ______.

A．the Japanese watch was better

B．the German watch was better

C．each of them thought his own watch was better than the other's

D．both the watches were wrong

Passage Two

In 1826, a Frenchman named Niepce needed pictures for his business. So he invented a very simple camera. He put it in a window of his house and took a picture of his garden. That was the first photo.

The next important date in the history of photography (摄影术) was in 1837. That year, Daguere, another Frenchman, took a picture of his reading room. He used a new kind of camera in a different way. In his picture you could see everything very clearly, even the smallest thing. This kind of photo was called a Daguerreotype.

In about 1840, photography was developed. Then photographers could take pictures of people and moving things. That was not simple. The photographers had to carry a lot of film and other machines. But this did not stop them, for example, some in the United States worked so hard.

Mathew Brady was a famous American photographer. He took many pictures of great people. The pictures were unusual' because they were very lifelike.

Photographs also became one kind of art by the end of the 19th century. Some photos were not just copies of the real world. They showed feelings like other kinds of art.

36. The first photo taken by Niepce was a picture of______.

A. his business

B. his house

C. his garden

D. his window

Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space？ The reason is this: All objects have a natural attraction for all other objects; this is called gravitational attraction, but this power of attraction between two objects gets weaker as they get farther apart. When the butter was at the surface of the earth, it was 4,000 miles from the center (in other words the radius[半径] of the earth is 4,000 miles). When we took the butter 4,000 miles out, it was 8,000 miles from the center, which is twice the distance.

If you double the distance between two objects, their gravitational attraction decreases (减少) two times two. If you treble (成三倍) the distance, it gets nine times weaker (three times three). If you take it four times as far away, it gets sixteen times weaker (four times four ) and so on.

The best title for this passage is______.

A．The Earth Weight

B．Weight in Space

C．Changing Weight on the Earth

D．Weight on and off the Earth

艇) in the seas of Central America after their boat sank.Twenty-one days after they left Panama in their boat, Simony, they met some whales(鲸鱼). “They started to hit the side of the boat,” said Bill, “and then suddenly we heard water.” Two minutes later, the boat was sinking. They jumped into the life-raft and watched the boat go under the water. For twenty days they had tins of food, biscuits, and bottles of water. They also had a fishing-line and a machine to make salt water into drinking water — two things which saved their lives. They caught eight to ten fish a day and ate them raw(生的). Then the line broke. “So we had no more fish until something very strange happened. Some sharks(鲨鱼) came to feed, and the fish under the raft were afraid and came to the surface. I caught them with my hands.”About twenty ships passed them, but no one saw them. About twenty ships passed them, but no one saw them. After fifty days at sea their life-raft was beginning to break up. Then suddenly it was all over. A fishing boat saw them and picked them up. They couldn’t stand up. So the captain carried them onto his boat and took them to Costa Rica. Their two months at sea was over. During their days at sea, _______ saved their lives

A、tins of food and bottles of water

B、a fishing-line and a machine

C、whales and sharks

D、Twenty passing ships

fill a large balloon(3)hot air, they thought it would rise into the air and fly.They were right.They made a very large hot air balloon of cloth and paper.It measured ten meters it diameter.They filled it with hot air and the balloon got two hundred meters into the air.It fell into earth about three kilometers away.

At the next attempt, they (4) passengers use a bal loon to rise into the air and fly.We do not know what the passengers fell about the trip as they were a cock, a duck, and a sheep But we (5) know that the trip lasted eight minutes and the animals landed safely.(完型填空)

A.Instead

B.Pair

C.Do

D.Arranged

E.With

"One man draws out the wire, another strengthens it, a third cuts it, a fourth points it, a fifth grinds it at the top to prepare it to receive the head. To make the head requires two or three distinct operations. To put it on is a separate operation, to polish the pins is another. And the important business of making pins is, in this manner, divided into about eighteen distinct operations, which in some factories are all performed by different people, though in others the same man will sometimes perform. two or three of them."

Ten men, Smith said, in this way, turned out twelve pounds of pins a day or about 4 800 pins a piece. But if all of them had worked separately and independently without division of labor, they certainly could not turn out any pin, each of them have made twenty pins in a day and perhaps not even one.

There can be no doubt that division of labor is an efficient way of organizing work. Fewer people can make more pins. Adam Smith saw this but he also took it for granted that division of labor is in itself responsible for economic growth and development and that it accounts for the difference between expanding economies and those that stand still. But division of labor adds nothing new; it only enables people to produce, more of what they already have.

According to the passage, Adam Smith was the first person to______.

A．take advantage of the division of labor

B．explain the causes of the division of labor

C．understand the effects of the division of labor

D．introduce the division of labor into England