In America．a friend's inviting you to a restaurant doesn't mean that he or she will pay for the meal ________ you are told in advance．

A．unless

B．if

C．although

D．until

Cheer up! Everyone may haye periods in their lives ________ everything seems tough．

A．when

B．where

C．which

D．that

Though the suspect refused to admit that he had stolen the precious diamond at first．he ________ and admitted everything when he was shown the videotape．

A．broke up

B．broke away

C．broke down

D．broke into

Encourage your children to try new things, but try not to ________ them too hard．

A．draw

B．strike

C．rush

D．push

Nearly half a million immigrants, many of them English－speaking, ________ in the country during the last quarter of the nineteenth century．

A．have arrived

B．had arrived

C．arrived

D．have been arriving

In spite of all ________ has been said, quite a lot of people are still uncertain about the prices of housing in China．

A．that

B．what

C．which

D．as

Nowadays, skiing, ________ being a sport, has become a big industry and a notable feature of leisure culture．

A．except for

B．apart from

C．far from

D．due to

Hard work is no ________ of an excellent school record．You have to adopt a flexible approach to your learning．

A．guarantee

B．connection

C．permission

D．consequence

However weak we are, we can still do something against the powerful nature so．long as we are ________ prepared．

A．specially

B．adequately

C．physically

D．equally

Paper cutting, ________ traditional folk art form which originated in ancient China, was listed as ________ world cultural heritage by the United Nations in 2002．

A．the；a

B．a；the

C．the；the

D．a；a