我要的是理由）1(B)Fifty to sixty percent of all handguns are report

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我要的是理由）
1(B)Fifty to sixty percent of all handguns are reported____for criminal purposes in the U.S.
A to use B to be used C to have used D using
我选的是C
2）（A）It was an unforgettable accident that the luxurious ocean liner sank while_____ the Atlantic.
A crossing B crossed C being crossed D having crossed
我选的是D,我认为译为“已经穿过那隧道”,如果选A你想想看在穿隧道时隧道沉没了他还活着吗?.

第一题“百分之五六十的枪都被用作了犯罪~”用被动.只有B.
第二题the luxurious ocean liner是指奢华的海轮,在穿越大西洋时沉没（可能是指泰坦尼克）,用现在分词表正在进行.

There are fifty students in the class,sixty percent of _____ 百分之50是fifty percent还是fifty of percent Fifty percent of the students are boys. Fifty percent of the students 的同义句是? they are home to more 50 percent of all creatures on the ear fifty percent of all mothers work outside the home是什么意思呢, Sixty percent of our class ______ (be) going to visit the ol which numbers are more than fifty percent of the largest num fifty percent of the money＿ compare to "That compared to fifty-two percent of the patien sixty ----of people,A.percentB.percents.详细说明percent的单复数情况 sixty ----of people,A.percentB.percents.请详细说明percent的单复数情况