三玄对于魏晋玄学和道家的创立都起到了重要的引导作用。

阅读理解

     One Sunday a few of us decided to take advantage of the first sunny day we'd have for ages to take

a trip down to the coast to visit the penguins again. Last time I went down there was a couple of months

ago and it was a dull cold day. Sunday couldn't have been more different - clear skies and sunshine made

it feel like summer, although it was still -25°C.

      Six of us drove to the coast. It was the first time we'd been off the base on our own without our field

assistant, so it had a slightly different feeling - more like a few friends going to the seaside than an

Antarctic field trip! When we reached Windy Creek, we luckily caught sight of quite a few small flying

seabirds, which are seldom seen there.

     Once on the sea ice we found that some of the more curious penguins had wandered over from the

main group to come and check us out. We'd been told that then they were nursing their chicks (刚孵出

的幼雏) and they would be more careful and nervous than last time, but that didn't seem to be the case. We walked across to the main group which were stretched for a couple of miles along the coast. We sat

down for some sandwiches and soon found ourselves surrounded by many curious observers. Without

any attackers on land, they were very brave and came within a meter of us to pose (摆姿势) for photos.

     Before heading back, we spent a few hours on the sea ice watching the penguins and their chicks,

which had grown dramatically (明显地) since our last visit. It was such a nice day.

1. When did the trip most probably happen?

A. On a dull Sunday.      

B. On a warm Sunday.

C. On a summer Sunday.    

D. On a winter Sunday.

2. It can be inferred from the second paragraph that the six people _____.

A. felt a little nervous      

B. felt a little excited

C. were left all by themselves on their Antarctic base

D. got bored with staying with their field assistant

3. What does the writer mean by saying "but that didn't seem to be the case"?

A. They were told a lie.

B. A wrong decision was made.

C. The truth was the opposite.

D. They didn't believe what they were told.

4. The six people did the following during the trip EXCEPT _____.

A. feed the penguins

B. take pictures of the penguins

C. enjoy watching flying seabirds

D. watch the young penguins

1929～1933年美国经济危机时，凯恩斯把那些上街购物的家庭妇女称作爱国者。他说：“现在我们所需要的不是勒紧裤带过日子，而是一种发展扩张……多制造一些商品”。从经济学来看，凯恩斯的“消费爱国论”是

A．看到了经济危机的根本原因

B．表明生产与消费之间不存在矛盾

C．表明扩大消费是对付经济危机的一种手段

D．提倡超前消费，反对勤俭节约，加强了国家对经济的干预

要在报表上显示格式为“7/总10页”的页码，则计算控件的控件源应设置为______。

A．[Page]/总[Pages]

B．=[Page]/总[Pages]

C．[Page]&"/总"&[Pages]

D．=[Page]&"/总"&[Pages]

“张公两龙剑，神物合有时”，请问“两龙剑”指的是哪两把名剑？

简述氧化性物质的危险特性？