单项选择。

（ ） 1.Please tell me ____ the Great Wall.

A. of
B.on
C.about
D.in

（ ） 2.The classroom is ten years_____.

A. old
B. long
C.tall
D.big

（ ） 3.____ people built the Great Wall.

A.Thousand
B. Tousand of
C. Thousands
D. Thousands of

（ ） 4. The Huanghe River is five thousand five hundred ______.

A. long
B. big
C. tall
D.high

（ ） 5. She is fourteen _____ old.

A. year
B.years
C.metres
D. metre

（ ） 6. --- ______ you walk here? ---Yes, I can.

A. Do
B.Can
C.Are
D.Does