Câu hỏi: Solar energy is not only plentiful but also infinite.

A. without limit

B. boundless

C. limited

D. indefinite

Câu 1: My mom is always bad-tempered when I leave my room untidy.

A. feeling embarrassed

B. talking too much

C. very happy

D. easily annoyed

Câu 2: My cousin tends to look on the bright side in any circumstance.

A. be optimistic

B. be pessimistic

C. be confident

D. be smart

Câu 3: We are now a 24/7 society where shops and services must be available all hours.

A. an active society

B. an inactive society

C. a physical society

D. a working society

Câu 4: 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 5: The distinction between schooling and education implied by this remark is important.

A. explicit

B. implicit

C. obscure

D. odd

Câu 6: With her sophiscated tastes, the singer has become an omnipresent icon of style and beauty.

A. oblivious

B. controversial

C. ubiquitous

D. unknown