There are trees on ________ side of the street.

You will want two trees about ten feet apart, from _____ to suspend your tent.

(A) there (C) which

(B) them (D) where

A.all

B.in together

C.altogether

D.gather

Although they plant trees in this area every year, the tops of some hills are still _______.

A) blank B) hollow C) vacant D) bare

_____ to suspend your tent.

(A) there (C) which

(B) them (D) where

A.obtain

B.breed

C.arrange

D.create

A.in sight

B.in place

C.in order

D.in turn

______________.

A.empty

B.blank

C.vacant

D.bare

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.()

meal of good，thick paper，old letters, for example.She doesn't like newspapers very much.

Of course，the best paper comes from wood.Wood comes from trees，and trees are plants.Vegetables and fruit and plants too，and we eat a lot of them.So can we also eat wood and paper？

Scientists say，"All food comes in some way from plants." Well，is that true？ Animals eat grass and grow fat.Then we eat their meat.Little fish eat little sea-plants; then bigger fish swim along and eat the...Chickens eat bits of grass and give us...Think for a minute.What food does not come from plants in some way？

Scientists can do wonderful things with plants.They can make food just like meat and cheese.And they can make it without the help of animals.It is very good food too.Now they have begun to say，"We make our paper from wood.We can also make food from wood.The next thing is not very difficult." What is the next thing？ Perhaps it is-food from paper.Scientists say，"We can turn paper into food.It will be good，cheap food too; cheaper than meat or fish or eggs."

So please keep your old books and letters.Don't feed them to your cat.) One day，soon，they will be on your plate.There is nothing like a good story for breakfast.

1、The best paper come from Wood.()

2、From the passage，we can infer 推断) thatfew kinds of food do not come from plants in some way.()

3、The main idea of the passage is all food comes from plants in some way.()

4、The writer asks us to keep our old books and letters because we can make food from them soon.()

5、The best title for the passage is " Food from Plants ".()

f production. They include natural resources, labor, capital, and entrepreneurs.

Land, water, mineral deposits, and trees are good examples of natural resources. For example, Exxon Corporation, the world's largest oil company, makes use of a wide variety of natural resources. It must obviously have vast quantities of crude oil to process each year. But Exxon also needs the land where the oil is located, as well as land for its refineries and pipelines.

The people who work for a company represent the second factor of production, labor. Sometimes called human resources, labor is the mental and physical capabilities of people. Exxon employs over 150,000 people worldwide. Carrying out the business of such a huge company requires labor force with a wide variety of skills ranging from managers to geologists to truck drivers.

Obtaining and using material resources and labor requires capital, the funds needed to operate an enterprise. Capital is needed to start any business. Capital is also needed to keep the business operating and growing. Exxon's annual drilling costs alone run into the billions of dollars.

Finally, many economic systems need entrepreneurs to function. Entrepreneurs are those people who accept the opportunities and risks involved in creating and operating businesses. They are the people who start new businesses and who make the decisions that allow small businesses to grow into larger ones. Exxon Corporation started as an

entrepreneurial venture. Although it did not acquire its current name until 1973, its roots can be traced to 1862 when John D. Rockefeller and Murice B. Clark decided to establish a petroleum-refining firm.

26. Factors of production refer to ().

A. natural resources and capital

B. labor and entrepreneurs

C. both A and B

27. The labor force needed in Exxon Corporation are ().

A. people who have a variety of skills

B. only geologists and truck drivers

C. managers to run the company

28. Exxon's annual drilling costs alone run into the billions of dollars. 'run into' here means ().

A. divide

B. reach

C. meet

29. The funds needed to operate an enterprise are referred to as ().

A. capital

B. resources

C. labor

30. They are the people () start new business and make the decisions.

A. which

B. whom

C. who