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（请给出正确答案）
A．had they been done
B．having been done
C．they had been done
D．they were done
答案
更多“The millions of calculations involved, ______ by hand, would have lost all practical value”相关的问题
第3题
O'Leary is writing a computer program that______.
A．uses math to increase the speed of calculation
B．tells the identity of a criminal in a certain area
C．provides the crime records of a given city
D．shows changes in criminals' position
第4题
A.Millions of
B.Millions
C.A million of
D.Million of
第6题
A.million
B.millions
C.million of
D.millions of
第7题
Millions of people worldwide take warfarin to prevent stroke and blood clots.
A．Y
B．N
C．NG
第8题
This herbal medication native to Korea is_______to millions of people worldwide annually.
A．overseen
B．arranged
C．prescribed
D．selected
第10题
A.million of
B.millions of
C.the million
D.a million of
第11题
Netscape is an influential web site which is visited by millions of people.
A．Right
B．Wrong
C．Not mentioned
