(1)煤、石油作为能源的依据是什么? (2)乙醇是一种绿色燃料.它可以由绿色植物

题型:问答题

问题:

(1)煤、石油作为能源的依据是什么?

(2)乙醇是一种绿色燃料.它可以由绿色植物经过一系列反应制得.写出乙醇(C2H5OH)燃烧的化学方程式:______.

(3)世界上有很多海域的海底蕴藏有大量的“可燃冰”.这种“可燃冰”外观像冰,其化学组成是CH4•nH2O,请写出它的可燃成分(CH4)燃烧的化学方程式:______.

(4)为什么氢气被认为是最为清洁的新型能源?写出反应的化学方程式:______.

考点:化石燃料氢气的用途化学反应方程式的书写文字表达式乙醇
题型:问答题

纪委对派驻纪检组实行()。派驻纪检组按照有关规定对驻在部门的党组织和党员领导干部进行监督。

题型:问答题

---_____book is this?

--- I think it _____ Carla’s. It has his name on it.

A.Who is, could be

B.Who’s, might belong to

C.Whose, must be

D.Whose, can’t belong to

题型:问答题

一块长方形的绿地,长478厘米,宽76厘米,给这块绿地周围围上篱笆,大约需要多少米篱笆?这块绿地的面积约有多少平方米?

题型:问答题

Ⅲ 阅读(共两节,满分40分)

第一节 阅读理解(共15小题;每小题2分,满分30分)

阅读下列短文,从每题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。

Can you believe your eyes? A recent experiment suggests that the answer to that question may depend on your age.

Martin Doherty, a psychologist at the University of Stirling in Scotland, led the team of scientists. In this experiment, Doherty and his team tested the perception(观察力) of some people, using pictures of some orange circles. The researchers showed the same pictures to two groups of people. The first group included 151 children aged 4 to 10, and the second group included 24 adults aged 18 to 25.

The first group of pictures showed two circles alone on a white background. One of the circles was larger than the other, and these people were asked to identify the larger one. Four-year-olds identified the correct circle 79 percent of the time. Adults identified the correct circle 95 percent of the time.

Next, both groups were shown a picture where the orange circles, again of different sizes, were surrounded by gray circles. Here’s where the trick lies in. In some of the pictures, the smaller orange circle was surrounded by even smaller gray circles — making the orange circle appear larger than the other orange circle, which was the real larger one. And the larger orange circle was surrounded by even bigger gray circles — so it appeared to be smaller than the real smaller orange circle.

When young children aged 4 to 6 looked at these tricky pictures, they weren’t fooled — they were still able to find the bigger circle with roughly the same accuracy as before. Older children and adults, on the other hand, did not do as well. Older children often identified the smaller circle as the larger one, and adults got it wrong most of the time.

As children get older, Doherty said, their brains may develop the ability to identify visual context. In other words, they will begin to process the whole picture at once: the tricky gray circles, as well as the orange circle in the middle. As a result, they’re more likely to fall for this kind of visual trick.

41.Doherty and his team of scientists did an experiment to evaluate        .

A.children’s and adults’ eye-sight

B.people’s ability to see accurately

C.children’s and adults’ brains

D.the influence of people’s age

42.When asked to find the larger circle,        .

A.children at 6 got it wrong 79 % of the time with no gray ones around

B.only adults over 18 got it right 95% of the time with gray ones around

C.children at 4 got it right about 79 % of the time with gray ones around

D.adults got it right most of the time with gray ones around

43.According to the passage, we can know that        .

A.a smaller orange circle appears bigger on a white background

B.an orange circle appears bigger than a gray one of the same size

C.a circle surrounded by other circles looks bigger than its real size

D.a circle surrounded by bigger ones looks smaller than its real size

44.Visual context may work when children get older than        .

A.4                           B.6                            C.10                          D.18

45.Why are younger children not fooled?

A.Because they are smarter than older children and adults.

B.Because older people are influenced by their experience.

C.Because people’s eyes become weaker as they grow older.

D.Because their brain can hardly notice related things together.

题型:问答题

MA500目前不能定货,能否用STR43ME完全替代?

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