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1) 12. A ) Taking a vacation abroad . B ) Reviewing for his last exam . C ) Saving enough money for a rainy day . D ) Finding a better way to earn money . 2) 13. A ) Preparing for his final exams . B ) Negotiating with his boss for a raise . C ) Working part time as a waiter . D ) Helping the woman with her courses . 3) 14. A ) Finish her term paper . B ) Save enough money . C ) Learn a little bit of Spanish . D ) Ask her parent's permission . 4) 15. A ) He has rich sailing experience . B ) He speaks Spanish fluently . C ) He is also eager to go to Spain . D ) He is easy to get along with .
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A.
散列算法
B.
随机数生成算法
C.
对称密钥算法
D.
非对称密钥算法
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【单选题】密码处理依靠使用密钥，密钥是密码系统里的最重要因素。（）在加密数据与解密时使用相同的密钥。
A.
散列算法
B.
随机数生成算法
C.
对称密钥算法
D.
非对称密钥算法
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A.
The woman should resign.
B.
The woman should stop tolerating her job.
C.
The woman should consider her job objectively by comparison.
D.
The woman should be happy with the terrible working conditions.
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