These batteries are not good. At lest they will ________ only two months ________.

[　　]

There is no ________ that Bill will be elected this year; it is now only a matter of time.

[　　]

You can take as many as you like because they are free of ________.

[　　]

China has ________ coal, oil and natural gas, which are exploited for energy.

[　　]

There is something wrong with our TV. The picture is not very ________.

[　　]

An umbrella can be used to ________ us from rain.

[　　]

Before doing the experiment, Mrs Zhu talked about ________ in the lab to the students.

[　　]

Franklin's kite experiments ________ that electricity and lightning are the same.

[　　]

Choose the word or expression which is closest in meaning to the underlined part(选择与划线部分意义最相近的词语)

Nowadays, more and more urban people begin to grow tired of the city's life.

[　　]

A．tired out　　　　B．trouble

C．dislike　　　　　D．neglect

Choose the word or expression which is closest in meaning to the underlined part(选择与划线部分意义最相近的词语)

There being no bus, they had to set out on foot.

[　　]

A．walk　　　　 B．start

C．arrange　　　D．act