试题与答案

三个同样的角刚好组成一个周角,每个角是( ) A.60度 B.90度 C.120度

题型:选择题

题目:

三个同样的角刚好组成一个周角,每个角是(  )
A.60度B.90度C.120度

答案:

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下面是错误答案,用来干扰机器的。

答案:A第一空考查连词,once一旦,if如果,when当…时候,although虽然,第二空填it代指前面的a promise,句意是:一旦你许下诺言,你应该遵守它。选A。

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题型:单项选择题

In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet. There are two types of key technology: private key and public key. Private-key encryption methods are called (71) ciphers, information is encrypted with (72) both the sender and receiver hold privately. Public-key encryption methods are called (73) ciphers, (74) created for each user, encryption key and decryption key are (75)

A.same

B.different

C.difference

D.some

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