The wreckage of something like a jet plain discovered in the heart of the desert is believed ______ a UFO and _______down for reasons still mysterious.

　 A. to be; have fallen B. to have been; to have fallen C. to be; to fall D. having been; having fallen

If you don't like the drink you______just leave it and try a different one.

A. ordered　　　 B. are ordering　 C. will order　　　 D. had ordered

Many of the world’s pollution problems have been caused by the crowding of large groups of people into the cities. Supply for the needs of the people leads to further pollution by industry. If the rapid increase of world population in countries continues at the present rate, there may be much greater harm to human beings. Some scientists speak of the increase in numbers of people as “population pollution.”

About 2,000 years ago, the world population was probably about 250 million. It reached a billion in 1850. By 1930 the population was two billion. It is now three and a half billion. It is expected to double by the year 2,000. If the population continues to grow at the same rate, there will be 25 billion in the world a hundred years from now.

Man has been using the earth’s resources more and more rapidly over the past years. Some of them are almost used up. Now many people believe that man’s greatest problem is how to control the growth of the population. The material supplies in the world will be far from enough to support the human population, in time to come, if the present rate of increase continues. Already there is overcrowding in many cities and starvation in some countries. Should man’s population keep on growing so rapidly as before? Many people believe that human survival in the future depends on the answer to this question.

1. The rapid increase in population is considered to be __________.

A. the increase of resources　　　　 B. population pollution

C. the development of mankind　　　 D. the present rate

2. The world population will be _________ by the year 2,000.

A. 7 billion　　 B. 250 million　　　 C. 25 billion　　 D. 3.5 billion

3. If the present rate of increase continue, ________________.

A. the world is going to end

B. the earth won’t be able to support the growing population in the future

C. pollution has nothing to do with the rapidly increasing population

D. there would be four billion in the world a hundred years from now

4. Which of the following is WRONG according to the passage?

A. In 1850 the world population reached a billion.

B. Man must fight a battle against population pollution.

C. The world’s population is increasing with years.

D. All of the earth’s resources are gone now.

_______that the president will leave office at once.

A.It hopes　　　　　 B.It’s hoped

C.This is hoped　　 D.We are hoped

Students should be encouraged to use ____ Internet as ____ resource.

A. /; a　　　　　 B. /; the　　　　　 C. the; the　　　　　 D. the; a

—Who is your favourite basketball player in China?

—Yao ming, of course. No one plays ______.

A．better　　　　　　 B．best　　　　　 C．good　　　　 D．well

The program will double the amount of money ________　 to help pay for health care.

　 A．valuable　　　　　 B．convenient　　　　 C．comfortable　　　　 D．a(chǎn)vailable

The river ______ are covered with trees is very long.

A. whose banks　　 B. of which banks　 C. whose the banks　　 D. the bank of which

Is this school ______ you visited last year?

A. that　 B. where　 C. the one where　　 D. the one