临界点的高低( )有关。A．与设定的基准收益率 B．与项目内部收益率 C．与增加的

在工程建设期间，建设单位所需的临时宿舍、办公室等临时设施的费用应计入( )。

A．建安工程费用中的临时设施费
B．建设单位管理费中的开办费
C．工程建设其他费用中建设单位临时设施费
D．建安工程费用中的措施费

我会根据汉语提示填空。

1. There are four                   (季节) in a year. 

2. I want to make                   (雪人). 

3. There are many green                  (叶子) on the tree.

4. This is my                  (最喜欢的) TV show. 

5. I'd like some                   (西方的) food.

下列说法中，正确的是[ ]

A．芳香烃的分子通式是C_nH_2n-6(n≥6)

B．苯的同系物是分子中仅含有一个苯环的所有烃类物质

C．苯和甲苯都不能使酸性KMnO₄溶液褪色

D．苯和甲苯都能与卤素单质、硝酸等发生取代反应

根据马克思关于生产劳动和非生产劳动的科学划分，文科卫事业费支出仍应归入非生产性的范围。

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