下列关于金融市场含义的说法，错误的是( )。 A．它是金融资产进行交易的有形和无形

（4分）生态系统及稳定性的探究

探究目的：初步学会观察和研究人工生态系统。

实验材料：

带瓶塞的透明玻璃瓶、凡士林、金鱼藻、绿萍、虾、螺蛳、细沙、河水、不透光的盒子。

实验装置如图所示（将A、B瓶置于有光条件下，C瓶用不透光的盒子罩住）。

请回答：

(1)针对“光对生态系统的稳定性有影响吗？这个问题，请你作出假设：              。

(2)对(1)所提出的问题，应选择         瓶与B瓶进行对照实验。

(3)在生态系统中，能量流动一般是从生产者固定           开始的。

(4)在A、B、C三个生态瓶中，生态系统维持时间最长的应该是           瓶。

子在川上曰：“逝者如斯夫，不舍昼夜”。这句话蕴含的道理是 [ ]

A．运动时无条件的、绝对的

B．世界万物是永恒发展的

C．运动是物质的唯一特性

D．运动是离不开物质的

以下不是CT设备的组成部分的是（）

A.X线球管

B.探测器

C.计算机系统

D.磁场

E.显示设备

July 21,2007 was a typical English summer’s day—it rained for 24 hours ! As usual, I rushed home from work at midday to check on the house. Nothing was amiss. By the time I left work at 5 pm, however, the road into our village was flooded. Our house had never been flooded, but as I opened the front door, a wave of water greeted me. Thank God the kids weren’t with me, because the house was 5 feet deep in water. We lost everything downstairs. And the plaster of the walls, ceilings pulled down.

At first we tried to push on through. We didn’t want to move the children out of home, so we camped upstairs. We put a sheet of plastic across the floor to protect us from the damp. But after three months, we felt very sick, so we moved to a wooden house in a park. The house was small, but at first we were all just delighted to be in a new place. Unfortunately, things took longer than expected and we were there for 10 months. The life there was inconvenient. What surprised me most was how much I missed being part of a community. We had lived in a friendly village with good neighbors, and I’d never thought how much I’d miss that.

Although our situation was very hard, it’s difficult to feel too sorry for yourself when you look at what’s happening elsewhere. I watched a news report about floods in Northern India and thought, "We didn’t have a straw but that was swept away, and our house is still standing. We’re lucky. "

We moved back home in August. With December coming, there’s still reconstruction work to be done, so it’s difficult to prepare for Christmas. But I can’t wait—I’m going to throw a party for our friends in the village to say thanks for their support. This year, I won’t need any gifts—living away from home for months has made me realize how little we actually need or miss all our possessions. Although we are replacing things, there’s really no rush—we have our home back, and that’s the main thing.

What does the underlined word "amiss" in the first paragraph mean（）

A．Wrong.

B．Missing.

C．Right.

D．Foun

一位扭伤后腰及左腿痛2个月的病人，未经任何治疗。在当地医院CT检查显示L间盘突出（偏左）。

最佳治疗方法是（）

A.坐骨神经封闭

B.局部涂骨质宁擦剂（外用药）

C.暂行牵引，按摩和理疗等

D.通过间盘镜摘除突出髓核

E.立即手术行髓核切除