21、
A.It contributes less to air pollution than truck industry.
B.Its competitors are inconsiderate of customers.
C.It preserves a traditional way of doing business.
D.It creates personal fortunes for investors.
22、Passage Three.
听材料,回答下列各题:
A.They took objective tests.
B.They specialized in one subject.
C.They spoke instead of writing.
D.They were timed by electric clocks.
23、
A.Modem industry must have developed before the Middle Ages.
B.Modem industry must have developed around the 19th century.
C.Modem industry must have developed in Greece or Rome.
D.Modern industry must have developed machines to take tests.
24、
A.Objective tests.
B.Spoken tests.
C.Personal tests.
D.Subjective tests.
25、
A.The features of the exams in the Middle Ages.
B.How to perform well in both spoken and written exams,
C.How did the forms of exams evolve.
D.The different exams designed for people of different ages.