Passage One
Questions l6 t0 19 are based on the passage you have just heard．
16．A.They are motorcycles designated for water sports．
B.They are speedy boats restricted in narrow waterways．
C.They are becoming an efficient form of water transportation．
D.They are getting more popular as a means of water recreation．
17．A.Water scooter operators’lack of experience．
B.Vacationers’disregard of water safety rules．
C.Overloading of small boats and other craft．
D.Carelessness of people boating along the shore．
18．A.They scare whales to death．
B.They produce too much noise．
C.They discharge toxic emissions．
D.They endanger lots of water life．
19．A.Expand operating areas．
B.Restrict operating hours．
C.Limit the use of water scooters．
D.Enforce necessary regulations．
Passage Two
Questions 20 t0 22 are based on the passage you have just heard．
20．A.They are stable．
B.They are close．
C.They are strained．
D.They are changin9．
21．A.They are fully occupied with their own business．
B.Not many of them stay in the same place for lon9．
C.Not many of them can win trust from their neighbors．
D.They attach less importance to interpersonal relations．
22．A.Count on each other for help．
B.Give each other a cold shoulder．
C.Keep a friendly distance．
D.Build a fence between them．
Passage Three
Questions 23 t0 25 are based on the passage you have just heard．
23．A.It may produce an increasing number of idle youngsters．
B.It may affect the quality of higher education in America．
C.It may cause many schools to go out of operation．
D.It may lead to a lack of properly educated workers．
24．A.It l：5 iess serlotls in cities than tn rural areas．
B.It affects both junior and senior high schools．
C.It results from a worsening economic climate．
D.It is a new challenge facing American educators．
25．A. Allowing them to choose their favorite teachers．
B.Creating a more relaxed learning environment．
C.Rewarding excellent academic performance．
D.Helping them to develop better study habits．
