人类社会的发展离不开能源.当今社会,人类利用的能源主要来自化石燃料. (1)用来

题型:问答题

问题:

人类社会的发展离不开能源.当今社会,人类利用的能源主要来自化石燃料.

(1)用来驱动汽车、飞机和轮船的燃料主要是从石油中根据不同沸点范围分馏出来的汽油、航空煤油、柴油等,石油分馏的过程属于______(填“物理”或“化学”)变化.

(2)为减少汽油的用量,人们将乙醇与汽油按一定比例混合即得到乙醇汽油来代替汽油.使用乙醇汽油的好处是除了可以节省石油资源外,还有(写一条)______,乙醇在氧气中完全燃烧的化学方程式为______.

(3)2011年5月,我国科考队在重测珠穆朗玛峰高度时,发现由于全球气温升高,珠峰冰川消融区面积不断扩大,大自然又一次发出警告:地球还在变暖!遏制温室效应已刻不容缓.研究表明:大气中的二氧化碳含量增大,是引起温室效应的重要原因.造成大气中二氧化碳的含量增大的主要原因是______.

为了减缓温室效应,我们每个人都要从身边做起,请举出一件你可以做到的有利于减缓温室效应的事情______.

考点:化石燃料燃料的利用和新能源的开发二氧化碳对环境的影响
题型:问答题

急性心梗早期(24小时内)死亡的主要原因是()

A.心源性休克

B.心律失常

C.心脏破裂

D. * * 肌断裂

E.心衰

题型:问答题

在免疫应答中,不具有抗原呈递作用的细胞是()

A.B细胞

B.吞噬细胞

C.郎格汉斯细胞

D.树突状细胞

E.T细胞

题型:问答题

审判:旁听

A.抢险救灾:善后处理 

B.演出:观众 

C.宏观调控:财政政策 

D.开会:学习

题型:问答题

  

第二节:读写任务(共1小题;满分 25分)

阅读下面的短文 .然后按照要求写一篇150词左右的英语短文.

We all know the story of "The tortoise and the hare". The hare lost because he was overconfident. So slow­-and-steady wins the race.but did you know the tortoise and hare raced three more times? Afrer his loss the hare challenged the tortoise to a second race and this time was without stopping from start to finsh. There was no doubt that he won. The lesson this time was

that fast-and-consistent beats slow-and-steady.then the tortoise challenged the hare to  a third race. over a slightly different route. The hare ran at top speed until he reachcd a broad river.Although the finishing line was just a kilometre past the river the hare had no way of croasing and once more the slow-and-steady swimming tortoise came out on tup.

The hare and the tortoise. by this time, had become good friends. They realized they could perfom better together than separately. So they decided to have one more race. But this time they would work as a team.  They started off. and this time the hare carried the tortoise till the  riverbank. There. the tortoise took over and swam across the river with the hare on his hack. On the opposite bank. the hare again camed the tortoise and they reached the finishing line togeLhcr. much more quickly than chey had been able to alone They both felt a greater sense of

Satisfaction than they'd felt earlier.                                        

[写作内窖]

1.以约30个词概括这段短文的内容;

2(1)以约120个词就第四次龟兔赛跑的寓意发表个人观点。内容包括:

(1)如何利用自身优势:

(2)如何发挥团队精神。

[写作要求】

1.在作文中可使用自己的亲身经历或虚构的故事,也可以参照阅读材料的内容,但不

得直接引用原文中的句子:

2.作文中不能出现真实姓名和学校名称。

[评分标准]

概括准确,语言规范,内容合适,篇章连贯。

题型:问答题

人是有什么演变而来的()

A、猴子

B、类人猿

C、猩猩

D、长臂猿

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