Câu hỏi:

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

A. conservation

B. nation

C. mention

D. question

Câu 1:

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 2:

Phone me if there are any new _______.

A. develop

B. developed

C. developing

D. developments

Câu 3:

Each year about fifty hundred species of plants and animals are already being eliminated.

A.  dropped

B. removed

C.  kicked

D.  tossed

Câu 4:

He says he'll tell the authorities but it's just an empty ______.

A.  threat

B.  threaten

C.  threatening

D.  threateningly

Câu 5:

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 6:

As a child I had an _______ friend called Polly.

A. image

B. imagine

C. imaginative

D. imaginary