Test # 4
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760 questions in 76 tests. Each test contains 10 questions.
Idiom of the Day
not know the first thing about (someone or something)
to not know anything about someone or something
I do not know the first thing about carpets so we asked a specialist to repair the carpet in our apartment.
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Artillery Gun Leveler
D.B Parkinson, an employee at Bell Labs (started by Alexander Graham Bell and at one time owned by AT&T) was designing an add on to the telephone in 1940. One night, he dreamt he was in the middle of the war in Europe and, after being shown by an artillery crewman, saw the device he was creating helped the cannon take out Nazi aircraft with surprising accuracy.