Câu hỏi: The existence of different kinds of animals and plants which make a balanced environment is called........

A. biodiversity

B. rubbish

C. challenge

D. maintain

Câu 1: We should........all the electric appliances when leaving our room.

A. turn of

B. turn on

C. turn up

D. turn off

Câu 2: Many people become ..................because of the natural disaster every year.

A. homeland

B. homesick

C. homeless

D. homework

Câu 3: Temple of Literature is the famous historical and cultural.......in Hanoi.

A. temple

B. remain

C. ground

D. site

Câu 4: I can't hear what you are saying. Can you................the radio?

A. turn on

B. turn off

C. turn up

Câu 5: A country which exports a lot of rice is called a(n)........country.

A. rice-export 

B. exporting-rice

C. export-rice

D. rice-exporting

Câu 6: This National Park....over 200 square kilometres of rainforest.

A. contains

B. hold

C. gets 

D. covers