Today the number of people ________ English in China is increasing rapidly.

  A. learning   B. are learning   C. to learn    D. learn

The number of people invited _____ fifty, but a number of them ____ absent for different reasons.

   A. were; was　       B. was; was　　　   C. was; were        D. were; were

Only if you don’t have a fear of heights do you want to visit the CN Tower. And if you can take a trip to the top of it will surely be worth it. The CN tower is Canada’s most famous symbol and the centre of tourism in Toronto.

Over 550 meters, it is one of the tallest building in the world; on a clear day the view is wonderful. Each year, around 2 million people take the elevator ride to the top of the tower to take in the breath-taking view at the top of the world. Once you are at the top, see if you have the courage to walk across the see-through glass floor .

If you are hungry, plan to eat at the revolving restaurant at the top of the tower. The floor in the 360-degree restaurant rotates once every 72 minutes allowing everyone a complete view of the city below. The CN tower has broken record many times, winning such titles as World’s Longest Metal staircase ,World’s Tallest building and , most recently , World’s Highest Wine Cellar. In 1995, the CN tower was considered as one of the seven wonders of the Modern World.

Today, the top of the tower, more than 333m in the air, serves as the year-round workplace for more than 550 people. The tower’s workers help to make the world-class attractions and food there.

   While at the CN tower, you’ll also have the chance to visit gift shops. You will find the CN Tower in the heart of downtown, on Front Street. On the north shore of Lake Ontario, the CN Tower is open 364 days a year(closed on Christmas Day).

1.Who can’t visit the CN tower?

  A. Someone who has heart attack.

B. An old man who has got flu.

C. A person afraid of height

D. A woman having high blood.

2.How many titles has the Tower got?

A. 2     B. 3     C. 4      D. 5

3.Which of the following number is Not agree with its description?

A. 333 --- the height of the tower

B. 550 --- the number of people who work at the top of the tower

C. 364 --- the days that the tower is open each year

D.360--- the degree of the restaurant revolves.

4.What can we infer from the passage?

A. You can go to visit the tower any day you like.

B. You can buy some gifts and eat as well while you are at the tower.

C. You have to climb the stairs to the top of the tower to enjoy the view.

D. The floor of the revolving restaurant is made of glass. 

As people slowly learn to cure diseases, control floods, prevent hunger, and stop wars, fewer people die every year. As a result, the population of the world is becoming larger. In 1925 there were about 2 billion people in the world; today there are over 6 billion.

When the number rises, extra mouths must be fed. New lands must be brought under development, or land already farmed must be made to produce more crops. In some areas the land is so over-developed that it will be difficult to make it provide more crops. In some areas the population is so large that the land is divided into too tiny units to make improvement possible with farming methods. If a large part of this farming population went into industrial work, the land might be farmed much more productively (多产地) with modern methods.

There is now a race for science, technology, and industry to keep the output of food rising faster than the number of people to be fed. New types of crops, which will grow well in bad weather, are being developed, so there are now farms beyond the Arctic Circle in Siberia and North America. Irrigation (灌溉) and dry-farming methods bring poor lands under the plough. Dams hold back the waters of great rivers, which can provide water for the fields in all seasons and provide electric power for new industries. Industrial chemistry provides fertilizer to suit different soils. Every year, some new methods are made to increase or to protect the food of the world.

1.The author says that the world population is increasing because _____.

A. there are many rich valleys and large fields

B. farmers are producing more crops than before

C. people are living longer due to better living conditions

D. new lands are being made into farmlands

2.The author says that in areas with large populations, land might be more productively farmed if _____. 

A. the land was divided into smaller pieces

B. people moved into the countryside

C. industrial methods were used in farming

D. the units of land were much larger

3.We are told that there are now farms beyond the Arctic Circle. This has been made possible by _____. 

A. growing new types of crops

B. irrigation and dry-farming means

C. providing fertilizers 

D. destroying pests and diseases

4.Why is the land divided into tiny units in some areas?

A. There are too many people living there.

B. It saves more natural resources there. 

C. It prevents crops from serious diseases there.

D. Farmers can grow various kinds of crops there.

5.Why do some people use dams to hold back waters from great rivers? 

A. To develop a new kind of dry-farming methods.        

B. To prevent crops from floods.

C. To provide water and electricity in all seasons.           

D. To water poor lands in bad weather. 

The number of people invited __________fifty, but a number of them__________ absent for different reasons.