【简答题】Questions 17-20 are based on the following passage. You now have 15 seconds to read ques-tions 17-20. 17. Why does the speaker say that radiation is similar to radio waves? [A] Because both of them ca...
【简答题】QUESTIONS 16-20 For questions 16-20, mark the correct letter A-H on your answer sheet. Sarah: Where's John? Mary: 16 ______ Sarah: The traffic is very bad. Mary: 17 ______ Sarah: Oh, that's right. He ...