(28)______
A.expressed
B.reported
C.described
D.explained

(30)______
A.them
B.it
C.him
D.her

(31)______
A.on
B.to
C.at
D.in

go
A.go
B.game



give
C.give
D.large

The word “they” in paragraph 1 refers to _______.
A.wolves
B.dogs
C.scientists
D.both wolves and dogs

According to the passage, which of the following is NOT mentioned about the wolf?
A.Wolves have been living on Earth for about a million years.
B.Wolves have better genes than dogs, so they are stronger.
C.Wolves could not be domesticated the way dogs have been.
D.Wolves may not be kept as pets the way dogs have been.

The word “mature” in paragraph 3 almost means ________.
A.fully grown
B.early rise
C.full blossom
D.completely evolve

The passage is mainly about ________.
A.reasons companies aren't taking care of employees as they once did
B.ways in which international companies have caused a loss of job
C.reasons employees change jobs more frequently than they did in the past
D.the contrast between employers of the past and employers nowadays

What is one reason employees might keep their current jobs nowadays?
A.They are worried when the company is not successful.
B.They are happy and satisfied with their work.
C.They want to get promoted at work.
D.Their employers provide bad working conditions.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The scientists are encountering the difficulties of ________ of radioactive waste.
A.depleting
B.preserving
C.eliminating
D.disposing