填空题

The passage contains TEN errors. Each indicated lie contains a maximum of ONE error. In each case, only ONE word is involved. You should proofread the passage and correct it in the following way."
For a wrong word, underline the wrong word and write the correct one in the blank provided
at the end of the line.
For a missing word, mark the position of the missing word with a "∧" sign and write the word
you believe to be missing in the blank provided at the end of the line.
For an unnecessary word, cross the unnecessary word with a slash "/" and put the word in the blank
provided at the end of the line.
The world’s population continues to grow. There now are about 4 billion of us on
earth. That could reach 6 billion by the end of the century and 11 billion in a farther 75 (1) ______
years. Experts have long been concerned about such a growth. Where will we find the
food, water, works, houses, schools and health care for all these people A major new (2) ______
study shows that the situation may be changing. A large and rapid drop in the world’s
birth rate have taken place during the past 10 years. Families generally are smaller now (3) ______
than they were a few years ago. It is happened in both developing and industrial nations. (4) ______
Researchers said they found a number of reasons for this. More men and women are
waiting more longer to get married and are using birth control devices and methods to (5) ______
prevent and delay pregnancy. More women are going to school or working at jobs away (6) ______
from home instead having children. And more governments, especially in developing (7) ______
nations, now support family planned programs to reduce population growth. China is (8) ______
one of the nations that has made great program in reducing its population growth. (9) ______
China has already cut off its rate of population growth by about one half since 1970. (10) ______