Parents should take seriously their children's requests for sunglasses ________ eye protection is necessary in sunny weather.

A. because

B. though

C. unless

D. if

After Yang Liwei succeeded in circling the earth ________ astronauts desire to do is walk in space.

A. where

B. what

C. that

D. how

The flowers ________ sweet in the botanic garden attract the visitors to the beauty of nature.

A. to smell

B. smelling

C. smelt

D. to be smelt

He speaks English well indeed, but of course not ________a native speaker.

A. as fluent as

B. more fluent than

C. so fluently as

D. much fluently than

I don't ________ rock and roll. It's much too noisy for my taste.

A. go after

B. go away with

C. go into

D. go in for

________ on-going division between English-speaking Canadians and French-speaking Canadians is ________ major concern of the country.

A. The; 不填

B. The; a

C. An; the

D. An; 不填

People may have different opinions about Karen, but I admire her________, she is a great musician.

A. After all

B. As a result

C. In other words

D. As usual

Several weeks had gone by ________ I realized the painting was missing.

A. as

B. before

C. since

D. when

The faces of four famous American presidents on Mount Rushmore can be seen from a ________ of 60 miles.

A. length

B. distance

C. way

D. space

It is reported that the United States uses ________ energy as the whole of Europe.

A. as twice

B. twice much

C. twice much as

D. twice as much