下列哪个地区气候湿润，全年皆夏[ ] A．吐鲁番盆地 B．海南岛 C．云贵高原

大城市的公共交通部门正在赤字中挣扎。乘客总抱怨汽车晚点和运输工具出毛病，服务种类减少，以及票价高于他们过去习惯于支付的水平。由于上述原因，以及汽油的价格并未高到令人不敢问津的水平，所以公共交通车的乘客有所减少，从而更进一步增加了赤字。
以下哪项关于公交乘客数量与汽油价格的关系的陈述最为上面文字所支持

A．随着汽油价格的上升，公交乘客数也上升。

B．即使汽油价格上升，公交乘客数仍然继续下降。

C．如果汽油价格升至令人不敢问津的水平，公交乘客数将上升。

D．汽油的价格总是足够低，这使得私人交通比公共交通便宜，因此，汽油价格的波动不太可能影响公交乘客数。

       若夫日出而林霏开，云归而岩穴暝，晦明变化者，山间之朝暮也。野芳发而幽香，佳木秀而繁阴，风霜高洁，水落而石出者，山间之四时也。朝而往，暮而归，四时之景不同，而乐亦无穷也。 ——《醉翁亭记》（节选）

       至若春和景明，波澜不惊，上下天光，一碧万顷；沙鸥翔集，锦鳞游泳；岸芷汀兰，郁郁青青。而或长烟一空，皓月千里，浮光跃金，静影沉璧，渔歌互答，此乐何极!登斯楼也，则有心旷神怡，宠辱偕忘，把酒临风，其喜洋洋者矣。——《岳阳楼记》（节选）

1．解释下列加横线词在文中的意思。

   （1）云归而岩穴暝       暝：                                

   （2）野芳发而幽香       芳：                                

   （3）而或长烟一空       一：                                

   （4）把酒临风              把：                                 

2．翻译下列句子。

   （1）晦明变化者，山间之朝暮也。

   （2）沙鸥翔集，锦鳞游泳。

3．分别概括这两段文字中景物描写的内容。

     《醉翁亭记》（节选）：                                                                                          

     《岳阳楼记》（节选）：                                                                                          

4．依据选文，填写下表。

This morning, a Virgin Atantin 747 Jumbo Jet became the first commercial airplane to fly on biofuel. The short flight from London to Amsterdam used a blend of 20% babassu(棕榈) oil mixed with 80% conventional jet fuel.

What was really exciting about the flight was the fact that the engine did not have to be altered in any way for the biofuel to work While this is a great initial step in trying to reduce CO₂(carbon-dioxide)emissions(排放)from airplanes. there are a lot of hurdles (障碍)that still need to be overcome.

First and foremost, unlike the normal fuel used to run airplanes (known as Jet A),biofuel freezes at high altitudes. Also, Jet‘A’fuel burns consistently (at the same pace),which means it provides a safe and reliable fuel for long flights--engineers are not sure if biofuel will be able to do the same.

The biggest hurdle to a full biofuel switch is our ability to be able to grow enough crops that can be converted to biofuel. There are two concerns that scientists have in this matter – the first is that the land to grow the extra crops will come from clearing more of our forests and the second is that since it competes with what we eat, the price of food will go up.

However, Richard Branson of Virgin Airlines, envisions that if biofuel starts to replace oil on a greater basis, it will be manufactured from algae（藻类）produced in sewage treatment plants, not from food sources.

Birgin Airlines is not the only one trying to look for alternative fuel sources. Earlier this year, an Airbus A380 used another alternative fuel－a man-made mix of gas-to-liquid, in one of its four engines. The flight was tested by Rolls Royce (manufacturer of jet engines), in partnership with Shell (an oil company). Rolls Royce is also working with Air New Zealand on a similar project.

While a complete switch to alternative fuel may take years, it is very encouraging to see airlines, oil companies and airplane manufacturers all coming together to try to make it happen!

小题1:．Why does Virgin Airlines try to replace normal fuel with biofuel?

A．To cut down the flight cost of the company.

B．To remove some hurdles for the biofuel to work.

C．To reduce CO₂ emissions from airplanes.

D．To test plane engines on biofuel.小题2:．Which is NOT true for a full biofuel switch of airplanes?

A Biofuel cannot run for long flights.                  

B．Biofuel cannot work at high altitudes.

C．Man has not enough land to grow extra crops for biofuel. 

D．It’s not easy for sewage treatment plants to manufacture biofuel.

小题3:．One of the hurdles to be overcome for a full biofuel switch is to          .

A．alter the engine for airplanes

B．make biofuel burn consistently

C．open more land to grow more crops

D．develop sewage treatment plants小题4:．We can infer from the last paragraph that          .

A．there is a long way to go for a complete switch to alternative fuel

B．it won’t be long before alternative fuel comes into use

C．airlines, oil companies and airplane manufacturers are reliable

D．alternative fuel has a bright future小题5:．Which of the following can best serves as the title of this passage?

A．Biofuel-Alternative Fuel Sources.

B．The First Commercial Flight Powered by Biofuel.

C．How to Reduce CO₂ Emissions from Airplanes.

D．Vigin Airlines Trying to Alter Fuel Sources.

下列说法不正确的是( )。
①我国西南地区的开发，始于春秋时期
②我国发明生铁冶炼技术是春秋后期，在战国时期著名的冶铁中心有邯郸、宛，邯郸又是诸侯国都城
③我国最早建立县制是在秦朝统一中国后
④都江堰和郑国渠都是闻名世界的防洪灌溉工程，都是战国时期秦国完成的

A．①③

B．②④

C．②③④

D．①③④

缺血性心肌病主要需与下列哪项鉴别（）

A.扩张型心肌病

B.肥厚型心肌病

C.肺源性心脏病

D.心包炎

E.风湿性心脏病