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 1 Traditionally, universities have carried out two main activities: research and teaching. Many experts would argue that both these activities play a critical role in serving the community. T
In order to prepare a lecture, one must do a lot of research and spend plenty of time \_\_\_\__ his material so that his speech is clear and easy to follow.
Passage 1 After 20 years of marriage, a husband may still not understand his wife. How is it that she is never at a (1)\_\_\_\__ for words? How can she (2)\_\_\_\__ the names of a couple they met on
Passage 3Questions 11 to 15 are based on the following passage. In the past industries had more freedom than they have now, and they did not need to be as careful as they must today. They did not nee