下列哪项符合Ⅰ度房室传导阻滞的心电图特征A．一般无法诊断B．窦性P波形态不同C．PP

2010年8月3日，山西洪桐大槐树景区迎来了一批由多名台湾官员和台湾媒体记者组成的“寻根祭祖”团。洪桐大槐树景区为这个特殊的“寻根”团举行了长达一个多小时的寻根祭祖仪式。与这一现象相关的我国古代政治制度是[ ]

A．分封制

B．宗法制

C．郡县制

D．王位世袭制

保持商品的数量和质量不变的包装属于（）。

A.单个包装

B.组合包装

C.工业包装

D.商业包装

阅读理解

     If cars had wings,they could fly and that just might happen, beginning in 2012.The company

Terrafugia, based in Woburn, Massachusetts, says it plans to deliver its carplane, the Transition,

to customers by the end of 2012.

     "It's the next 'wow' vehicle,"said Terrafugia vice president Richard Gersh. "Anybody can buy

a Ferrari, but as we say, Ferraris don't fly."

     The car plane has wings that unfold for flying-a process the company says takes one

minute-and fold back up for driving. A runway is still required to take off and land.

     The Transition is being marketed more as a plane that drives than a car that flies, although it is

both. The company has been working with FAA to meet aircraft regulations, and with the National

Highway Traffic Safety Administration to meet vehicle safety regulations.

     The company is aiming to sell the Transition to private pilots as a more convenient and cheaper

way to fly. They say it saves you the trouble of trying to find another mode of transportation to get

to and from airports: You drive the car to the airport and then you're good to go. When you land,

you fold up the wings and hit the road. There are no expensive parking fees because you don't have

to store it at an airport-you park it in the garage at home.

     The carplane is designed to fly primarily under 10,000 feet. It has a maximum takeoff weight of

1,430 pounds, including fuel and passengers. Terrafugia says the Transition reduces the potential for

an accident by allowing pilots to drive under bad weather instead of flying into marginal(临界)

conditions.

    The Transition's price tag: $194,000. But there may be additional charges for options like a radio,

transponder or GPS. Another option is a fullplane parachute.

     "If you get into a very awful situation, it is the necessary safety option," Gersh said.

      So far, the company has more than 70 orders with deposits. "We're working very closely with

them, but there are still some remaining steps," Brown said.

1. We can learn from the first paragraph that________. 

A. carplanes will be popular in 2012

B. people might drive a carplane in 2012

C. both Transition and Ferrari can take off and land

D. Richard Gersh is the vice president of Massachusetts

2. It takes the carplane one minute to________.

A. fold and unfold its wings          

B. unfold wings for flying

C. land in the airport                

D. meet flying safety regulations

3. According to the passage, which of the following is NOT true? 

A. The carplane needs a runway to take off and land.

B. To meet aircraft regulations, the company has been working with FAA.

C. The carplane may fly as high as normal planes.

D. People can park the carplane in the garage at their home.

4. The underlined word "it" in the last but one paragraph refers to________.

A. the radio    

B. the transponder      

C. the GPS    

D. the fullplane parachute

5. What's the best title for the passage? 

A. Cars With Wings May Be Just Around The Corner

B. Which To Choose: A Ferrari Or A CarPlane?

C. A More Convenient And Cheaper Way To Fly

D. Cars With Wings Can Fly As Fast As Plane

汽轮机起动调试的目的是什么？

毛 * * 说：“马克思主义哲学认为十分重要的问题，不在于懂得了客观世界的规律性，因而能够解释世界，而在于拿了这种对于客观规律性的认识去能动地改造世界。”这段话强调的是（）

A、认识的任务在于透过事物的现象抓住事物的本质

B、认识的任务不仅在于解释世界，更重要的是改造世界

C、认识的任务在于运用客观规律解释世界

D、只要了解了客观规律就能成功地改造世界