Câu hỏi: Socially, the married _______ is thought to be the basic unit of society.

A. couple

B. pair

C. twins

D. double

Câu 1: _______ is the study of the Earth's physical features and the people, plants, and animals that live in different regions of the world.

A. Science

B. Geography

C. History

D. Technology

Câu 2: A curriculum that ignores ethnic tensions, racial antagonisms, cultural _______ and religious differences is pot relevant.

A. diversity

B. contacts

C. barriers

D. levels

Câu 3: It is not easy to ________ our beauty when we get older and older.

A. develop

B. maintain

C. gain

D. collect

Câu 4: I put your keys in the drawer _______ they cannot get lost.

A. because

B. let alone

C. instead of

D. so that

Câu 5: The computer allows us to work fast and _______.

A. efficiently

B. differently

C. variously

D. freshly

Câu 6: The ______ to success is to be ready from the start.

A. key

B. response

C. agreement

D. demand