Why does the author use "prefer robots" in paragraph 5?
A.To show the importance of robots in production.
B.To encourage the workers to resign from work.
C.To compare the robots with the workers.
D.To emphasize the scientist's role in inventing robots.

The word "This" in paragraph 3 refers to __________________.
A.the possible war
B.the cash crop planting
C.the serious shortage
D.the demand for water

The audience ............out laughing when the singer fell over.
A.called
B.shouted
C.burst
D.broke

We can conclude from the passage that in 2050 ________________.
A.people will be able to travel around the world in two hours
B.fewer cars will be used to keep the environment green and clean
C.no one will be injured or die because of accidents
D.space planes will take the place of cars as a means of transport

What can be inferred about the life in 2050 according to the passage?
A.Life in 2050 will be much better than that of today.
B.TV will be an indispensable means of communication and business.
C.People will not suffer from the shortage of water due to the polar melting.
D.The deaf will not have to depend any longer on the electronic hearing devices.

The word "conquered" in the last paragraph is closest in meaning to ________.
A.controlled
B.diagnosed
C.transmitted
D.caused

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Laura (A) expected to give her mother (B) a hand in housework at the weekend, (C) but she did (D) nothing.
A.expected
B.a hand
C.but
D.nothing

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
It’s (A) less expensive to buy a computer (B) part by part; you can save (C) a few hundred dollars (D) all together.
A.less
B.part by part
C.a few hundred
D.all together

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
The living room isn’t as big as the kitchen.
A.The living room is bigger than the kitchen.
B.The kitchen is smaller than the living room.
C.The kitchen is bigger than the living room.
D.The kitchen is not bigger than the living room.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
I’m sure it wasn’t Mr. Park you saw at the conference because he is in Seoul now.
A.It can’t have been Mr. Park you saw at the conference because he is in Seoul now.
B.It couldn’t be Mr. Park you saw at the conference because he is in Seoul now.
C.It mustn’t have been Mr. Park you saw at the conference because he is in Seoul now.
D.It mightn’t be Mr. Park you saw at the conference because he is in Seoul now.