China is a racially mixed country, in which various ethnic(民族) groups bring their own unique flavors to each corner of the country, which adds ________ people's table.
A.to great variety of B.great variety to
C.to a great variety of D.the great variety to
The use of the telescope to observe the heavens close up has made ________ great increase of our knowledge of the starts.
A.possible B.it possible C.possibly D.it possibly
________ to a colorful campus culture, students should draw a line between what is their major concern and what is of ________ importance.
A.Exposing…the least B.Having exposed...least
C.Having been exposed…the less D.Exposed...less
Scientists have suggested a solution to cutting down greenhouse effect: planting an area ________ the US with trees, which, when mature, would consume as much carbon dioxide as is being released.
A.of the size of B.the size of C.as the same size as D.the same size of
General Eisenhower once told his soldiers that what ________ not necessarily the size of the dog in the fight-it's the size of the fight in the dog.
A.is counted B.counts is C.is counted is D.to count is
The autobiography(自传) of the happiest man would not be a record of sensational or exciting experiences, but ________ composed of simple and plain incidents or routines.
A.it is B.which is C.one that D.one
