Câu hỏi: Population growth rates vary among regions and even among countries within the same region.

A. restrain

B. stay unchanged

C. remain unstable

D. fluctuate

Câu 1: We'd better speed up if we want to get there in time.

A. slow down

B. turn down

C. put down

D. lie down

Câu 2: The only means of access to the station is through a dark subway.

A. arrival

B. admission

C. outlet

D. output

Câu 3: Strongly advocating health foods, Jane doesn’t eat any chocolate.

A. supporting

B. impugning

C. advising

D. denying

Câu 4: Unless the two signatures are identical, the bank won’t honor the check.

A. similar

B. different

C. fake

D. genuine

Câu 5: My first impression of her was her impassive face.

A. emotional

B. respectful

C. solid

D. fractious

Câu 6: There has been no discernible improvement in the noise levels since lorries were banned.

A. insignificant

B. clear

C. obvious

D. thin