A:rate B:pace C:step D:speed

The pace of recycling will have to be artificially quickened because ______.

A:nature' s own pace is slowing down rapidly B:the "working capital" of recycled material has all been used up C:the earth' s resources cannot be replaced by man D:the earth' s growing population requires more and more resources

A:pace B:step C:path D:course

Which of the following represents the author's view about the American culture

A:The fast pace produces nothing but ulcers and high blood pressure. B:It is not clearly told in the passage. C:The fast pace permits technological and scientific progress which benefits all people. D:He is not quite sure whether the American culture is agreeable.

A:ratio B:speed C:pace D:rate

The population of the world is growing at a dangerous________.

A:pace B:measure C:progress D:rate

A:seat B:pace C:place D:vacancy

The development of oils _____ the increasing demands made by the steady rise in powers produced by modem diesels.

A:has kept pace with B:has kept pace to C:has made pace with D:has made pace to

We have to keep _______ with the changing times.

A: step B: the pace C: a pace D: pace

The fastest runner ____ and the others followeD.

A:kept pace B: set the pace C: paced D: walked