Câu hỏi:

This is especially worrying when there are about 3,000 plants with values as medicines against cancer, AIDS, heart disease and many other sicknesses.

A.  illness

B.  disorder

C.  derangement

D.  derangement

Câu 1:

This is especially worrying when there are about 3,000 plants with values as medicines against cancer, AIDS, heart disease and many other sicknesses.

A. well

B. suddenly

C. particularly

D. highly

Câu 2:

But we can stop adding the problem while scientists search for answers, and laws are passed in nature’s defense.

A. frisk

B. rifle

C. track

D. examine

Câu 3:

Work on the production line is monotonous and lacks _______.

A.  variety

B.  various

C.  varied

D.  variable

Câu 4:

Choose the word whose underlined part has a different pronunciation from the others in each group

A.  variety

B. pattern

C.  vary

D.  back

Câu 5:

Without plants, most water would run off as soon as it falls, taking away valuable soil.

A. costly

B. estimable

C. cherished

D. admirable

Câu 6:

If you don't have anything _______ to say, I'd rather you kept quiet.

A. construct

B. constructors

C. constructive

D. construction