Questions 20 to 22 are based on the recording you have just heard.
A. Companies were fighting for the gaming market
B. They saw high economic returns in the business
C. More and more people were using mobile devices.
D. Smart phones were replacing the traditional computers.
查看答案
21）
A. It is beneficial
B. It is complicated
C. It is profitable
D. It is demanding
22）
A. by recruiting young emplyees from them
B. by strengthening cooperation with them
C. by getting fresh ideas from them.
D. by developing more applications for them.
Questions 23 to 25 are based on the recording you have just heard.
A. Waste products which can be prevented or disposed of sensibly.
B. Artificial and natural substances released into the environment.
C. Advertising that persuades people into buying products.
D. Nuclear power stations that cause ecoblogical imbalance.
24）
A. The farmers stop using any fertilizer.
B. The farmers stop using the farmland too heavily.
C. The farmers stop using farming machines.
D. The farmers stop growing with new methods.
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