: 巩固练习 一、单项选择 1.______ people in the world are sending information by E-mail every day. A. Several million B. Many millions C. Several millions D. Many million 2. It is not rare in ______ that people in ____ fifties are going to university for further education. A. 90s; the B. the 90s; / C. 90s; their D. the 90s; their 3. _______cave that George has discovered in his lifetime is near the Alps. A. The hundredth B. The hundred C. Hundredth D. A hundredth 4. The husband gave his wife ____ every month in order to please her. A. all half his income B. his half all income C. half his all income D. all his half income 5. ______ of the land in that district ______covered with trees and grass. A. Two fifth; is B. Two fifth; are C. Two fifths; is D. Two fifths; are 6. 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 7. Paper produced
