At minus 130℃, a living cell can be ________ for a thousand years．

A．spared

B．protected

C．preserved

D．developed

The traditional view is ________ we sleep because our brain is “programmed” to make us do so．

A．when

B．why

C．whether

D．that

________ he referred to in his article was unknown to the general reader．

A．That

B．What

C．Whether

D．Where

Small sailboats can easily turn over in the water ________ they are not managed carefully．

A．though

B．before

C．until

D．if

His movie won several awards at the film festival, ________ was beyond his wildest dream．

A．which

B．that

C．where

D．it

The Town Hall ________ in the 1800’s was the most distinguished building at that time．

A．to be completed

B．having been completed

C．completed

D．being completed

There is nothing more I can try ________ you to stay, so I wish you good luck．

A．being persuaded

B．persuading

C．to be persuaded

D．to persuade

After a knock at the door, the child heard his mother’s voice ________ him．

A．calling

B．called

C．being called

D．to call

Pop music is such an important part of society ________ it has even influenced our language．

A．as

B．that

C．which

D．where

The little boy came riding full speed down the motorway on his bicycle．________ it was!

A．What a dangerous scene

B．What dangerous a scene

C．How a dangerous scene

D．How dangerous the scene