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问题 单项选择题

在VBA中，下列变量名中不合法的是( )。

A．Hello

B．Hello World

C．3hello

D．Hello World

答案

参考答案：B

解析： 本题考查VBA中变量命名的知识。变量名的命名同字段命名一样，也可以由字母、数字和汉字组成，但是不能包含空格和任何除了下划线以外的标点符号。

单项选择题 B1型题

氯气中毒时可见（）

A.皮肤、黏膜呈樱桃红色

B.皮肤、黏膜呈古铜色

C.皮肤角化过度

D.皮肤溃疡或痤疮

E.皮肤脱脂而干燥
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单项选择题

Until recently, most population growth has occurred in relatively dense urban environments. In (91) words, even if we were witnessing rapid population growth, that would not mean that the (92) were filling in with people. (93) , the urban areas would tend to become more crowded. Historically, we find that people have moved to (94) the jobs were. Jobs were usually in ports or locations with many natural (95) . After transportation became relatively cheap, other geographical locations became (96) of economic activity. One factor that determines where people will move to, even when transportation becomes cheap, is (97) . And individuals working in cities (98) higher incomes than those working in (99) areas. Hence, population has tended until the 1970s to (100) in our major urban centers. Recently population has (101) out of the Northeast to the South and to the West for the more pleasant climates. If people did not (102) from living in large cities, there would likely be a much more even population distribution (103) our entire land area. Probably, if this (104) the case, there would be less concern over population (105) Indeed, one need only (106) a cross-country drive or plane trip to realize how (107) populated these United States really are. This is not to say that we should or should not do something about (108) growth. The shortage of people in certain areas merely demonstrates that overpopulation in the United States is really only a problem in (109) urban environments. And this problem may be slowly correcting (110) .

A．channels

B．routes

C．sources

D．centers
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