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: She wrote me a vicious letter.

A. helpful

B. gently

C. dangerous

D. healthy

Câu 2: He is among wealthy members of the golf club.

A. adroit

B. affluent

C. adjacent

D. poor

Câu 3: In some countries, the disease burden could be prevented through environmental improvements.

A. something to stiffer

B. something enjoyable

C. something sad

D. something to entertain

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: We are very grateful to Professor Humble for his generosity in donating this wonderful painting to the museum.

A. meanness

B. sympathy

C. gratitude

D. churlishness

Câu 6: She is a very generous old woman. She has given most of her wealth to a charity organization.

A. mean

B. amicable

C. kind

D. hospitable