The Cryptologic Museum says the Marine Corps Code Talkers could take a sentence in English and change it into their language in about 20 seconds. A code machine needed about 30 minutes to do the same work.
The Navajo Code Talkers took part in every battle the Marines entered in the Pacific during World War Two. The Japanese were very skilled at breaking codes. But they were never able to understand any of what they called "The Marine Code."
The Cryptologic Museum has many pieces of mechanical and electric equipment used to change words into code. It also has almost as many examples of machines used to try to change code back into useful words.
63.The NSA was founded__________.
A. in 1940
B. 1942
C. in 1952
D. in 2017
64.According to the passage, which one is not right?
A. “Cryptologic” implies containing some hidden information
B. The US decoded “AF” and won the victory in Midway Islands
C. Both Rchefort and Nimitz were American navy commanders
D. The US Marine Corps was fallen for in Midway Islands battle
65.The Americans used the Navajo language in their coding system during the Second World War for the reason that
.
A.
unusual language was successfully used for codes
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