高考问答dos 下载命令:一道英语题
来源：百度文库 编辑：高考问答 时间：2024/05/11 18:06:13
Calculations,which are astronomically exact,have been made()with the use of computers.
A.it possible
B.possible
C.possibly
D,to be possible
A.it possible
B.possible
C.possibly
D,to be possible
B
~have been made possible
就是~被实现。。。不用加it,因为前面已经有被made的主语了（calculations)
用it是这样的，computers have made it possible to get an astronomically exact calculation.
A
A
DDDDDDDDDDDDDDDD
B
Calculations have been made().去掉修饰就是这样的
你说是不是选B
换主动句就是:人们make Calculations possible.