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问题 单项选择题

（）系指在数据电文中，以电子形式所含、所附或在逻辑上与数据电文由联系的数据。它可以用于鉴别与数据电文有关的签字人和表明此人认可数据电文所含的信息。

A.电子认证

B.电子签字

C.电子交易

D.电子支付

答案

参考答案：B

完形填空

根据下列句子及所给汉语注释，写出空缺处各单词的正确形式。(每空一词)

小题1: It was not unitl the 20th century that some scientists doubted the _____(存在) of God.

小题2: The representatives from two parties _____(交换) their opinions with each other at the conference.

小题3: The bank has ______(分行) all over the country.

小题4:The plan received _____(普遍的) support throughout the country as they are warmly received.

小题5: She is very _____(失望) at losing the race.

小题6: In his youth he had the ambition of being a _____(钢琴家).

小题7:The teacher spends all her spare time in writing and we all say that she is _____(着迷于) to writing.

小题8: Did you know that English speakers also enjoy other forms of Asian poetry-Tang poems from China in ______(特别)

小题9:On hot days we often go _____(洗澡) in the river.

小题10:They studied the German market to find the _____(潜在性) there for investment.
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单项选择题 A1型题

诊断性腹腔穿刺和腹腔灌洗术，在诊断腹部损伤阳性率可达（）。

A.90%

B.80%

C.70%

D.60%

E.50%
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