利用超声波抛光的金属加工机床

鸟岛又名小西山或蛋岛(因鸟蛋遍地故得名)，位于布哈河口以北4公里处，岛的东头大，西头窄长，形似蝌蚪，全长1500米，1978年以后北、西、南三面湖底外露与陆地连在一起。鸟岛坡度平缓，地表由沙土、石块覆盖，岛的西南边有几处泉水涌流。主要植物有二裂季陵菜、白藜、冰草、镰形棘豆、西伯利亚蓼、嵩草、早熟禾等。鸟岛是亚洲特有的鸟禽繁殖所，是我国八大鸟类保护区之首，是青海省对外开放的一个重要地点。每年3～4月，从南方迁徙来的雁、鸭、鹤、鸥等候鸟陆续到青海湖开始营巢；5～6月间鸟蛋遍地，幼鸟成群，热闹非凡，声扬数里，此时岛上有30余种鸟，数量达16.5万余只；7～8月间，秋高气爽，群鸟翱翔蓝天，游弋湖面；9月底开始南迁。从生命系统的结构层次回答下列问题：

(1)该岛上全部的红头雁组成了___________。

(2)该岛上的一棵冰草属于____________。

(3)整个鸟岛组成了一个_____________。

(4)该岛上最基本的生命系统是______________。

随便抽查某商场四月份 5天的营业额分别如下(单位：万元)：3.4，2.9，3.0，3.1，2.6，估计这个商场四月份的营业额大约是        万元.

In relation to company law, explain:

(b) the circumstances under which a company can reduce its capital and the procedure to be followed. (6 marks)

阅读理解

     BRITAIN is a popular tourist place. But tours of the country have pros and cons.

     GOOD NEWS

     Free museums. No charge for outstanding collections of art and antiquities.

     Pop music. Britain is the only country to rival(与…匹敌)the US on this score.

     Black cabs. London taxi drivers know where they are going even if there are never enough of them

at weekends or night.

    Choice of food. Visitors can find everything from Ethiopian to Swedish restaurants.

     Fashion. Not only do fashion junkies love deeply and respect highly brand names such as Vivienne

Westwood, Alexander McQueen; street styles are justly loved, too.

     BAD NEWS

     Poor service. "It's part of the image of the place. People can dine out on the rudeness they have

experienced," says Professor Tony Seaton, of Luton University's International Tourism Research Center.

     Poor public transport. Trains and buses are promised to defeat the keenest tourists, although the

over crowded London tube is inexplicably(难以理解的) popular.

     Lack of languages. Speaking slowly and clearly may not get many foreign visitors very far, even in

the tourist traps(圈套).

     Rain. Still in the number one complaint.

    No air-conditioning. So that even splendidly hot summers become as unbearable as the downpours.

    Overpriced hotels. The only European country with a higher rate of tax on hotel rooms is Denmark.

     Licensing hours. Alcohol(酒) is in short supply after 11 pm even in "24-hour cities".

1. What do tourists complain most?

A. Poor service.

B. Poor public transport.

C. Rain.

D. Overpriced hotels.

2. What do we learn about pop music in Britain and the US through this passage?

铁路货物运输可以实现“门到门”运输。( )