自交系是指由一个（）优良单株经过连续人工自交和选育而形成的性状稳定一致的后代群体。

目前我国共有多少个省级行政单位和民族：                      （　　）

A．23、56

B．36、40

C．34、56

D．28、55

下图为某地区a城到d城之间的高速公路建设规划示意图。读图回答下列问题。

（1）建设规划设计走向有甲、乙两个方案，试分析两个方案的不足之处？

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（2）据图从自然条件方面分析a聚落比b、c聚落规模大的原因。 

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划分经济形式的标准是生产与消费的联系方式。

“NOW I just don't believe that. ”Surely all of us, at some point, have watched a movie and thought: It's simply badly researched，or the makers must think we're fools. Recently, The Daily Telegraph ran a humorous piece on untrue tech moments from some top movies. Let’s see what they are all about.

Tom Chiver, the writer of The Daily Telegraph uses his first example from the movie Independence Day, in which a character comes up with a virus（病毒）which destroys Windows the computer system the alien （外星人）spacecraft uses. “It's a good thing that they didn't have Norton Anti-virus，” jokes  Chivers.

It's just one case of a movie that takes a lot of license with its science. Another one Chivers mentions is from the movie Star Wars, where the glowing light beams (光束）traveling through space look very impressive. But the problem is that in space there are no air particles (粒子）for the light to reflect off. In reality, they'd be invisible（看不见的）, which wouldn’t look so cool on the big screen.

Most people think that the mind—bending Matrix films are made for great viewing. But for Chivers, the science in the movies is a little bit silly. He comments “…the film is based on the idea that humans are kept alive as electricity generators (发电机). This is not just unlikely —it's basically impossible. They would need more energy to stay alive than they would produce. It's just like saying that you'll power the car with batteries, and keep the batteries charged by running a generator from the wheels. ”

And finally, as Chivers points out, DNA is not replaceable. But this bit of elementary genetics passed the makers of the 2002 Bond film Die Another Day by. In the film the bad guy has “gene treatment” to change his appearance and his DNA, which is completely impossible in our real world.

小题1:Which of the following does the writer agree with about the movie Independence Day?

A．It's a science fiction movie.

B．It's about the alien spacecraft.

C．It's produced by Tom Chiver.

D．It's a jokey and humorous one.小题2: What is mainly talked about in the 4^th paragraph?

A．How we can power the car with batteries.

B．How Tom Chiver thinks of the Matrix films.

C．How humans are kept alive as power generator.

D．How the Matrix films are made for great viewing.小题3:Which of the following is true according to the passage?

A．The movie Star Wars is about the light beams in space.

B．The author doesn't take the science in movies seriously.

C．Nowadays nobody believes in science movies any more.

D．There is a horrible virus in the movie Independence Day.小题4:The underlined word “They” in the 4^th paragraph refers to ______.

A．human beings

B．car wheels

C．Matrix films

D．electricity generators

检查菌体的不同结构成分及抗原与特异性抗体结合形成复合物时须用（）

A.普通显微镜

B.荧光显微镜

C.暗视野显微镜

D.倒置显微镜

E.照相显微镜