(2013·湖北，24)According to the law, all foreigners have to________with the local police within two weeks of arrival.

A．associate  B．dispute  C．negotiate  D．register

(2013·福建，28)Old－fashioned phones matter when wireless networks ________ in disasters.

A．turn down  B．turn out

C．break down  D．break out

(2013·湖北，23)While intelligent people can often________the complex, a fool is more likely to complicate the simple.

A．sacrifice  B．substitute  C．simplify  D．survive

Everything comes with ________ price；there is no such ________ thing as a free lunch in the world.

A．a；a  B．the；/  C．the；a  D．a；/

(2013·嘉兴一中月考)Many people agree that ________ knowledge of English is a must in ________ international trade today.

A．the；an  B．a；/  C．the；the  D．/；the

(2013·泰州二模)In the market，vegetables are sold by ________ kilogram，I mean，by ________ weight.

A．the；/  B．/；/  C．the；the  D．/；the

(2013·泰安一中月考)—John has put forward ________ most challenging question for us to answer.

—Yes，it really is.I have never heard ________ harder one.

A．the；/  B．/；the  C．the；the  D．a；a

(2013·无锡一模)The education of ________ young is always ________ hot and serious topic.

A．/；/  B．the；a  C．/；the  D．the；/

(2013·西安一中月考)As ________ unemployment is very high at the moment，it's very difficult for people to find ________ work.

A．the；/  B．/；/  C．the；a  D．an；the

(2013·昆明二模)The operation is ________ success and the patient is now out of ________ danger.

A．a；the  B．a；/  C．/；the  D．/；/