填空题 Questions 14-18
·Using the information in the text, complete each sentence 14-18, with a word or phrase from the list below.
·For each sentence (14-18), mark one letter (A-G) on the Answer Sheet.
·Do not mark any letter twice.

A. people's desire to seek fortune in cities
B. lack of food
C. was falling
D. in stable marriage
E. not a serious problem as expected
F. women's desire for independence
G. women's improved status

填空题 During the years from 1957 to 1976, the birthrate of the United States ______.

填空题 What influences the birthrate most in the United States is ______.

填空题 The chief factor in bringing down the birthrate in Europe in the 19th century is ______.

填空题 Bringing population under control in the 21st century is ______.

填空题 Presently the stable population of rich countries is due to ______.