Who said “Learn the new while reviewing the old” in ancient China?

A．Lao Zi

B．Mencius

C．Sun Zi

D．Confuius

The earth is ________ million years old．

A．46

B．460

C．4600

D．46000

Which of the following countries can't have a white Christmas?

A．Canada

B．Australia

C．England

D．China

World ________ Day is on 11^th, July．

A．Population

B．Children's

C．Mother's

D．Labor

________ has the second largest population in world．

A．China

B．Brazil

C．The USA

D．India

Our planet is about ________ years old．

A．35,000

B．4600

C．4600 million

D．500 million

________ can cause high blood pressure and hearing problems．

A．Air pollution

B．Water pollution

C．Light pollution

D．Noise pollution

________ is one of the greatest scientists, who won the Nobel Prize for physics．

A．Yuan Longping

B．Bisheng

C．Yang Zhenning

D．Zheng He

________ is the largest freshwater lake in China．

A．Dongting Lake

B．Poyany Lake

C．Qinghai Lake

D．Hongze Lake

________ is the Chinese tradional holiday．

A．Father's Day

B．Teachers' Day

C．Christmas

D．the Mid-autumn