【正文】
interested in C. engaged to D. satisfied with 3. The world’ s birth rate has dropped because __________. A. people get married at a much later time B. more birth control methods have been used C. women would rather go to study or work than have children D. all of the above 4. By the year 2021, the number of births and the number of deaths in China will __________. A. be greatly different B. be equal C. drop a great deal D. bee much 答案: 1. C 2. A 3. D 4. B 5.