Do you like _____ shopping with me? [ ]

某飞机在5s内匀速飞行了1000m，它飞行的速度为______m/s，合______km/h；按此速度，飞机30min飞行的距离为______km．

阅读理解。

     Why did the chicken cross the road? To get to the other side.

     Most people know this joke. But recently, some people have been much more worried about how

the grizzly(灰白的) bear and mountain lion can cross the road.

   "Millions of animals die each year on U.S. roads," the Federal Highway Administration reports. In

fact , only about 80 ocelots(豹猫), an endangered wild cat, exist in the U. S. today. The main reason?

Road kill.

   "Eco-passages" may help animals cross the road without being hit by cars. They are paths both over

and under roads. "These eco-passages can be extremely useful, so that wildlife can avoid road accidents," said Jodi Hilty of the Wildlife Protection Society.

   But do animals actually use the eco-passages? The answer is yes. Paul Beier of Northern Arizona

University found foot marks left by mountain lions on an eco-passage that went under a highway. This

showed that the lions used the passage.

   Builders of eco-passages try to make them look like a natural part of an area by planting trees on and

around them. Animals seem to be catching on. Animals as different as salamanders(火蜥蜴)and

grizzly bears are using the bridges and underpasses(地下通道,下穿交叉道).

   The next time you visit a park or drive through an area with a lot of wildlife, look around. You might

see an animal overpass(越过,通过)!

1. The writer uses the example of "ocelots" to show that __________.

A. an increasing number of animals are killed in road accidents

B. the driving conditions have improved greatly

C. the measure for protecting wildlife fails to work

D. wild animals have become more dangerous

2. From the news story, we know an eco-passage is __________.

A. an underground path for cars            

B. a fence(栅栏) built for the safety of the area

C. a passage(通道) for animals to cross the road  

D. a bridge for animals to get over a river

3. The underlined(划线) part "animals seem to be catching on"  means __________.

A. animals begin to realize the dangers on the road

B. animals begin to learn to use eco-passages

C. animals are crossing the road in groups

D. animals are becoming safer

4. This passage is written to __________.

A. protect the endangered animals

B. call on drivers to be careful when seeing animals on roads

C. introduce a new way to help protect animals

D. tell us the main reason for the killing of animals in the US

海晟烟叶收购POS机采用最新的工业控制技术设计，可以适应恶劣的环境，但不能直接外接打印机。

资料1：北京京铁有限责任公司(110891××××)订购进口一批热拔合金钢无缝锅炉管(属法定检验检疫和自动进口许可管理商品，法定计量单位为千克)，委托辽宁抚顺辽抚锅炉厂有限责任公司 (210491××××)制造出口锅炉。载货运输工具于2007年4月10日申报进境，次日辽宁龙信国际货运公司(210298××××)持经营单位登汜手册和相关单证向大连大窑湾海关申报货物进口。保险费率3‰。

资料2

请根据以上资料，选择以下栏目的正确选项：

“商品名称、规格型号”栏：（）。

A．热拔合金钢制无缝锅炉管

B．热拔合金钢制无缝锅炉管HOT FINISHED SEAMLESS STEEL PIPES FOR BUILER

C．热拔合金钢制无缝锅炉管787×39×5000-7000MM

D．热拔合金钢制无缝锅炉管787×39×5000-7000MM HS 73045910

双线区间线路距离为什么不得少于4000mm？