根据所掌握的文化或背景知识，选择正确答案。
The slogan of the 30th Olympics is ________________.

A．One World One Dream	B．Inspire a generation
C．Faster，Higher，Stronger	D．Start Here

The sign @ on the keyboard means ______ in English.

A．at

B．and

C．an

D．a

You can see ___ in America.

A．the Opera House	B．the Statue of Liberty
C．Eiffel Tower	D．Big Ben

Below are some ideas about America culture. Which of the statements is NOT true?

A．In the US, most people do their own housework.

B．In the US, people who walk their dogs in public should clean up after them.

C．In the US, saying thank you is a common way of reacting to a compliment.

D．In the US, the bill in most restaurants includes a service change.

____ can prevent the earth from being hurt by harmful rays from the sun.

A．CO

B．CO2

C．H2O

D．O3

__________ lies in the center of China. There are over1,000 lakes in it.

A．Hubei

B．Hunan

C．Anhui

D．Jiangxi