67. According to the passage in World War II the Allies... A) were in possession of better electrical computers than Hitler was.
B) managed to track down many enemy spies with the said of Colossus
C) were rarely able to break the codes used by Hitler and his generals even after they had acquired Colossus.
D) tricked Hitler into believing that the D-Day invasion would happen earlier than actually planned.
68. It is clear from the passage that many of the newest and fastest supercomputers... A) are being used by government code-breaking centers
B) are largely used for destructive purposes
C) are especially designed to break codes
D) are still unable to break the world's most secure cipher systems