29.A.They dont have a positive attitude.
B.They have other arrangements.
C.They are too lazy.
D.They get up too late.
30.A.Having fun while in school.
B.Working toward long-range goal.
C.Being discountaged.
D.Dropping a class that is dull boring.
31.A.Some students just give up on their classes.
B.A positive attitude is the key to success in college.
C.The surver may be unscientific.
D.It is important to educate college students.
Passage Three
Questions 32 to 35 are based on the passage you have just heard.
32.A.Pollution of codstal areas.
B.Rise in sea levels.
C.Exhaustion of sea resources.
D.Earthquakes and volcanoes.
33.A.Greenhouse gases.
B.Over-exploitation of the beach.
C.Change of agricultural zones.
D.Change of climates.
34.A.farming implements.
B.Scientific farming methods.
C.Heat-resistant and drought-resistant crops.
D.Scientific farming system.
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