在我国导致肝硬化形成最主要的病因是
A.甲型病毒性肝炎B.乙型病毒性肝炎C.日本血吸虫病D.酒精中毒E.药物中毒
参考答案:B
The development of e-commerce may well bring the world into a brand new era of "electronic currency". At the moment, (51) 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 (52) to an entire finance system on the Net. It includes a virtual numeric currency, an electronic system of withdrawals, transfers and loans, and (53) cards of all shapes and sizes. The (54) 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. (55) it is a small and insignificant bank, it represents the trend of the future. In time to come, we may even have to (56) the familiar paper currency.
As the Net pushes the economy (57) 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 (58) 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 (59) This will definitely promote (60) and more efficient cooperation.
55().
A.If
B.After
C.Until
D.Although
急性CO中毒迟发性脑病不可能出现的临床表现为()
A.精神意识障碍
B.锥体外系神经障碍
C.锥体系神经损害
D.大脑皮质局灶性功能障碍和周围神经炎
E.颅内压升高