1 . On a distant mountain was_____ sign in characters. “One world, one dream” it said.

A．a 20-feet

B．20-foots

C．a 20-foot

D．20 feet

2 . Two       died of cold last winter.

A．hundreds old people	B．hundred old people
C．hundreds old peoples	D．hundred old peoples

3 . Two         students          to the opening ceremony last Friday.

A．hundreds; were invited	B．hundred; were invited
C．hundreds of; invited	D．hundred of; invited

4 .        , when Marx was already       , he found it was important to study the situation in Russia, so he began to learn Russian.

A．In 1870s, in his fifties	B．In 1870s, in fifties
C．In the 1870s, in fifties	D．In the 1870s, in his fifties

5 . Our country is nearly      years old. We'll celebrate its       birthday on October 1, 2019 around the country.

A．seventy, seventy	B．seventy, seventieth
C．seventieth, seventy	D．seventieth, seventieth

6 . As we can learn from the newspaper, they are already in their ________ (thirty) without a child. (所给词的适当形式填空)

7 . Most of the doctors in this hospital were born         , and they are         now.

A．in the 1970; in their fifties	B．in 1970s; in the fiftieth
C．in the 1970s; in fiftieth	D．in the 1970s; in their fifties

8 . A year is divided into        months. September is the        month of the year.

A．twelve; ninth

B．twelve; nineth

C．twelfth; ninth

D．twelfth; nineth

9 . It's about        kilometers from Nanchong to Chengdu.

A．two hundreds

B．two hundreds of

C．two hundred

D．two hundred of

10 . —Where is Class         ?   
—It's on the          floor.

A．Six; third

B．Sixth; third

C．Six; three

D．Sixth; three