1.It is reported that a (n) _____ of accidents has occurred
1.It is reported that a (n) _____ of accidents has occurred at that crossroads. A.series B.lot C.number D.amount 2.About the sixth century A.D.when few Europeans could read,the Chinese _____ paper. A.invented B.had invented C.have invented D.had been invented 3.Anyone,rich or poor,old or young,sick or _____ can follow a favorite hobby. A.well B.good C.fine D.happy 4.I have two friends but ____ of them likes to go fishing with me. A.none B.neither C.both D.either 5.His unhappy childhood _____ his bad temper. A.counts for B.accounts for C.makes for D.goes for 6.No one doubts _____ it is true. A.whether B.if C.that D.what 7.His brother had become a teacher,_____ he wanted to be. A.who B.what C.which D.that 8.“I don’t like to travel.” “Have you ever _____ in an airplane?” A.flying B.flew C.flowed D.flown 9.The center of gravity of the human body ______ behind his joint. A.located B.locating C.to locate D.is located 10.“Today is very cold,isn’t it?” “Yes,the river is _____ over.” A.freezed B.freeze C.frozen D.freezing A.freezed B.freeze C.frozen D.freezing 11.“What happened in that new area?” “New houses ______ recently over there.” A.are built B.build C.have built D.have been built 12.“When did you go to work?” “As soon as they came,we ______ to work.” A.went B.were going C.had gone D.go 13.She is such an irritating woman,I don’t know how you can ______ her. A.put up B.stand up to C.stand with D.put up with 14.To get my traveler’s check I had to ______ a special check to the bank for the total amount. A.make for B.make out C.make off D.make up 15.Little boys are easily ______. A.taken in B.taken away C.taken out D.taken over 16.The company is going to hand ______ the free samples tomorrow. A.up B.out C.on D.down 17.It was purely ______ chance that the mistake was discovered. A.in B.for C.by D.from 18.Be sure to _____ your work at the end of the exam. A.catch sight of B.hang up C.set D.look over 19.If light is not completely reflected by the object,some light is said _____. A.to be absorbed B.to absorb C.absorbing D.being absorbed 20.We now live in a world in which the population _____ rapidly. A.has been increased B.is increased C.is increasing D.is being increased 21.Two hours later we landed at San Francisco,_____ passports were examined. A.where B.when C.which D.while 22.I saw Dr.Smith _____ the operating room a moment ago. A.enter B.entered C.to enter D.had entered