[B]They prevent oxygen from entering the bone。 [C]They break down bone tissue。 [D]They connect the bone to muscle tissue。 21.[A]They have difficulty identifying these cells。 [B]They aren’t sure how these cells work。 [C]They’ve learned how to reproduce these cells。 [D]They’ve found similar cells in other species。 22.[A]To learn how to prevent a bone disease。 [B]To understand differences between bone tissue and other tissue。 [C]To find out how specialized bone cells have evolved。 [D]To create artificial bone tissue。 Questions 23 to 25 are based on the conversation you have just heard。 23.[A]A new fuel for buses。 [B]The causes of air pollution。 [C]A way to improve fuel efficiency in buses。 [D]Careers in environmental engineering。 24.[A]Her car is being repaired。 [B]She wants to help reduce pollution。 [C]Parking is difficult in the city。 [D]The cost of fuel has increased。 25.[A]A fuel that burns cleanly。 [B]An oil additive that helps cool engines。 [C]A material from which filters are made。 [D]An insulating material sprayed on engine parts。 Section B Directions:In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked [A], [B], [C]and [D].Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre。 Passage One Questions 26 to 28 are based on the passage you have just heard。 26.[A]From three to five months。 [B]Three months。 [C]Five months。 [D]Four months。 27.[A]Watch traffic。 [B]Obey commands。 [C]Cross streets safely。 [D]Guard the door。 28.[A]Three weeks。 [B]Two weeks。 [C]Four weeks。 [D]Five weeks。 Passage Two Questions 29 to 31 are based on the passage you have just heard。 29.[A]Two to four times。 [B]Four to six times。 [C]Four to eight times。 [D]Six to ten times。 30.[A]Sleeping pills made people go into REM sleep quickly。 [B]People had more dreams after they took sleeping pills。 [C]People became angry easily because they didn’t take sleeping pills。 [D]Sleeping pills prevented people from going into REM sleep。 31.[A]People dream so as to sleep better。 [B]People dream in order not to go into REM sleep。 [C]Because they may run into difficult problems in their dreams。 [D]Because in their dreams they may find the answers to their problems。 Passage Three Questions 32 to 35 are based on the passage you have just heard。 32.[A]A sales representative。 [B]A store manager。 [C]A committee chairperson。 [D]A class president。 33.[A]To determine who will graduate this year。 [B]To discuss the seating arrangement。 |