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问题 单项选择题 A2型题

患者，男性，32岁。阵发性心悸1年余，突发突止，每次持续30分钟至1小时。测心率200次／分，律齐，未见P波，QRS波形正常。诊断最可能是（）

A.窦性心动过速

B.心房扑动

C.阵发性室上性心动过速

D.阵发性室性心动过速

E.阵发性房性心动过速

答案

参考答案：C

解析：结合患者病史及心电图表现，首先考虑为阵发性室上性心动过速。窦性心动过速可见P波，阵发性室性心动过速可见QRS波增宽。

单项选择题

The development of e-commerce may well bring the world into a brand new era of "electronic currency". At the moment, (52) areas in Europe, the United States and Asia have already started studying the possibility of an electronic currency. Electronic currency is not only about currency. It (53) to an entire finance system on the Net. It includes a virtual numeric currency, an electronic system of withdrawals, transfers and loans, and (54) cards of all shapes and sizes. The (55) of an electronic currency system implies the emergence of "virtual banks" and "virtual enterprises". Actually, the first virtual bank appeared in the US in 1995. (56) it is a small and insignificant bank, it represents the trend of the future. In time to come, we may even have to (57) the familiar paper currency.

As the Net pushes the economy (58) rapidly, the economy is also bringing the Net market forward, resulting in the Internet itself becoming the world’s largest emerging market. Of course, this is just the beginning. Although there are many companies which made huge profits (59) in the Internet market, they tend to be small companies. To date, most companies are making losses. The competition in the knowledge-based economy will also be more (60) This will definitely promote (61) and more efficient cooperation.

57().

A.promote 

B.abandon 

C.encourage 

D.celebrate
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单项选择题

卖方负责租船订舱，并提供约定的货的及有关凭证，在规定在期限内将货物装船，装船后立刻通知买方，承担货物在装运港越过船舷前的一切风险，此时，买卖双方在买卖合同中没有采用的价格条件是（）。①FAS；②F0B；③CIF；④C&F。

A.①-④

B.①②

C.③④

D.④
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