在人和动物细胞中,作为主要储能物质的多糖是 [ ] A.糖原 B.纤维素 C.淀

题型:选择题

问题:

在人和动物细胞中,作为主要储能物质的多糖是 [ ]

A.糖原

B.纤维素

C.淀粉

D.葡萄糖

考点:糖类的种类和作用
题型:选择题

动物都有与各自生活环境和习性相适应的形态结构特征.请分析回答问题:

(1)蝗虫生活在干旱的陆地上,它具有______,可以防止体内水分的蒸发.

(2)鲫鱼的身体呈______形,可以减小游泳的阻力.

(3)家兔是食草动物,请你列举与这一生活习性相适应的结构特点:______.

(4)家鸽在飞翔时需要消耗大量的氧,因此,除了用肺呼吸以外,还有______辅助呼吸.

(5)狼、鹿等陆生动物具有发达的感觉器官和______,能够对多变的环境及时做出反应.

题型:选择题

延徽,幽州人。刘守光末年衰困,遣参军韩延徽求援于契丹,契丹主怒其不拜,使牧马于野。

述律后言于契丹主曰:“延徽能守节不屈,此今之贤者,奈何辱以牧圉!宜礼而用之。”契丹主召延徽与语,悦之,遂以为谋主。延徽始教契丹建牙开府,筑城郭,立市里,以处汉人,使各有配偶,垦艺荒田。由是汉人各安生业,逃亡者益少。契丹威服诸国,延徽有助焉。   

倾之,延徽逃奔晋阳。晋王欲置之幕府,掌书记王缄疾之。延徽不自安,求东归省母,过真定,止于乡人王德明家。德明问所之,延徽曰:“今河北皆为晋有,当复诣契丹耳。”

契丹主闻其至,大喜,如自天而下,拊其背曰:“向者何往?”延徽曰:“思母,欲告归,恐不听,故私归耳。”契丹主待之益厚。 (选自《资治通鉴·后梁记》)

【注释】①牧圉:到牧场中放牧。

小题1:下列句中的“以” 与“奈何辱以牧圉” 中的“以” 的意义和用法相同的一项是(2分)(      )

A.我以日始出时去人近

B.策之不以其道

C.则以一铁范置铁板上

D.不以千里称也小题2:写出下列句子中划线词的意思。(4分)

参军韩延徽求援于契丹             ②契丹主待之                   

③德明问所之                         ④者何往                              

小题3:翻译下列句子。(2分)

契丹主怒其不拜,使牧马于野。

小题4:韩延徽在契丹国被重用的原因有哪些?(不少于两点)(2分)

题型:选择题

(一)

On May 29, 1973, Thomas Bradley, a black man, was elected mayor of Los Angeles. Los Angeles is the third largest city in the United States, with a population of three million. About sixteen percent of the city’s population are black.

News of this election appeared on the front pages of newspapers everywhere in the United States. Here is how one major newspaper reported the event.

LOS ANGELES ELECTS BRADLEY MAYOR UNSEATING YORTYBLACK WINS 56 OF VOTES

Bradley called his victory over Yorty "the fulfillment of a dream". During his childhood and youth, people had kept telling him, "You can’t do this, you can’t go there, because you are a Negro. " Nevertheless he had won a decisive victory over a man who had been won 43.7 percent.

Los Angeles voters have had many opportunities to judge. Thomas Bradley had to form an opinion of him. The son of a poor farmer Texas, he joined the Los Angeles police force in 1940. During his twenty-one years on the police force he earned a law degree by attending school at night. He was elected to the city council ten years ago.

At the time of the Los Angeles election, three other American cities already had black mayors, but none of those cities had as large a population as Los Angeles. Besides, the percentage of blacks in those other cities was much larger. Cleveland, Ohio, had thirty-six percent black when Carl Stokes was elected mayor of Cleveland in 1967. In the same year Richard Hatcher was elected mayor of Cary. In Newark, New Jersey, sixty percent of the population were black when Kenneth Gibson was elected in 1970. Thus election of a black mayor in those cities was not very surprising.

In Los Angeles thousands of white citizens voted for Thomas Bradley because they believed he would be a better mayor than the white candidate. Bradley had spent forty-eight of his fifty- five years in Los Angeles. Four years ago Bradley lost mayoral election to Yorty. This time Bradley won.

From the passage we can infer that people().

A.voted for Bradley because of his black color

B.didn’t care much about his color when they voted

C.voted for him to give a chance to fulfill his dream

D.voted for Bradley because they trust him

题型:选择题

瞳孔缩小是由下列哪种神经支配的

A.副交感神经
B.交感神经
C.视神经
D.外展神
E.三叉神经

题型:选择题

适合细菌繁殖的条件是在______、水分、______及营养条件。

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