Câu hỏi: A chronic lack of sleep may make us irritable and reduces our motivation to work.

A. uncomfortable

B. responsive

C. calm

D. miserable

Câu 1: The works of such men as the English philosophers John Locke and Thomas Hobbes helped pave the way for academic freedom in the modern sense.

A. terminate

B. prevent

C. initiate

D. lighten

Câu 2: 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 3: The distinction between schooling and education implied by this remark is important.

A. explicit

B. implicit

C. obscure

D. odd

Câu 4: In some Asian coutries, it is customary for people to worship their ancestors.

A. fossils

B. elders

C. heirs

D. forefathers

Câu 5: Unless the two signatures are identical, the bank won’t honor the check.

A. similar

B. different

C. fake

D. genuine

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

A. insignificant

B. clear

C. obvious

D. thin