Passage 1Questions 1 to 5 are based on the following passage: In 2014, older Americans fell 29 million times, leading to 7 million injuries, according to a report published last week. About 2.8 milli
Passage 2Questions 6 to 10 are based on the following passage: Half of the world’s coral reefs(珊瑚礁) have died in the last 30 years. Now scientists are racing to ensure that the rest survive. Even if
Passage 2Questions 6 to 10 are based on the following passage: Dr. James Barry was the first woman in England to go to medical school. When she was growing up, woman could not go to medical school. (
Practice 13 (1) Actually, the world’s birth rate is falling. But so is death rate, as medical advances have made it possible for man to live longer than before. Such advances have also reduced baby d