虚实结合法中的“实”指的是与景观有关的民间传说。( )

在Visual FoxPro中，其扩展名为.mem的文件是______。

A．备注文件

B．内存变量文件

C．报表格式文件

D．屏幕格式文件

公民义务

Optimism is the art of always seeing the glass half full (1) half empty, finding something positive in even the most (2) of situations and last but not least the ability to expect the best even if the chances are (3) . It enables you to try new things, deal with failure as a learning experience (4) a stopping point. In general optimism gives you a reason to live. The world would be a better place if it was full of optimism, (5) unfortunately the trend in today’s youth is (6) the opposite way. Today it is (7) to be pessimistic. One could spend hours discussing how we arrived at this point, (8) our youth refuses to smell the roses and instead prefers to (9) themselves on their own pessimistic (10) .

Optimism is not an (11) gift but rather a learned behavior (12) . Like most behaviors optimism is best learned by watching examples, (13) you. The first step in creating a generation of people with a positive outlook on life, is to (14) life on the bright side yourself. (15) it would be wrong to (16) your child from all negativity, it is important that you are not the (17) of doubts and worries. Finding something positive in a negative situation needs to be (18) Show how to make the best of things by always (19) the positive, by encouraging your child after a(n) (20) and by explaining over and over that failure is just a part of progress.

20（）

A.obstruction

B.impediment

C.disappointment

D.hindrance

涂料墙柱面基层处理应达到的要求（）。

A.必须平整

B.表面颜色应一致

C.光滑

D.较为粗糙

超额收益法最适用于评估下列哪些资产（）。

A、客户关系

B、未结订单

C、专利技术

D、外购的软件