Câu hỏi: UFOs mean ................flying objects.

A. unknown

B. unidentified

C. unable

D. unimaginary

Câu 1: 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 2: We should........all the electric appliances when leaving our room.

A. turn of

B. turn on

C. turn up

D. turn off

Câu 3: Some whales migrate into warm waters to bear their.............

A. young 

B. diets

C. calves

D. young whales

Câu 4: Temple of Literature is the famous historical and cultural.......in Hanoi.

A. temple

B. remain

C. ground

D. site

Câu 5: 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 6: How many countries took part in the first World Cup?

A. interested

B. participated

C. competed

D. cooperated