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Have you ever (imagine)what the world looks like through the eyes of a bee? You can try it out with the MicaToolbox．
The MicaToolbox is a free plugin(插件) (build)by scientists at the University of Exeter in Britain．Together with Image J，a popular piece of software for
(science)pictures，it can turn many image into animal vision．This means people can check out the pictures
appear in the brains of animals such as insects，birds，and fish．
The way we see our world depends on how our eyes deal light．Human eyes have three types of photoreceptors(感光细胞)，and this makes us see
colors of red，green，and blue．Animals，
，might see it
(different)．A cat’s vision is similar to a human who is color blind，while bees can see ultraviolet(紫外线)light，easily finding patterns on flowers that show them the way to honey．
As of now，the MicaToolbox has already been used in many research projects， (look)at，for example，how animals hide
(they)You can download the software from researcher Jolyon Troscianko’s website http：// www．jolyon．co．uk／myresearch／image—analysis／image—analusis—tools．
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The Chinese government has decided to end its one-child per family policy and let families have two children. A statement gives the reasons for the change, ______ (say) it is meant to balance population development, stop a declining birth rate and strengthen the country’s work force.
China _____ (carry)out the one-child policy in 1980. But the government permitted a small number of __
___ (couple) to have two children. For example, some rural families were given approval to have two children if the first-born was a girl. In 2013, the government permitted other families to have two if one parent was __
__ only child.
A teacher and population expert, Jiang Quanbao, explains how Chinese families will react ___ the policy. “Many young people in the cities are ___
___ (probable) not interested in having a second child,” he says. “People in rural villages may be __
__ (much) interested, but some of them are already allowed to have two children.”
At the end of 2014, China had a population of 1.37 billion people, a total of 800 million of _____ are employed. But that job market population is expected ___
___(drop) by 2050. With the two-child policy, the labo
__ (short) will be relieved, starting in 20 years.
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Polar bears live in such environment that is too cold for most animals. For much of the year, they live and hunt on the ________ (freeze) Arctic sea ice. Nature has prepared them for the cold conditions but nothing has prepared them for the danger
________ threatens(威胁) their only home.
The polar bears’ world is melting. Polar bears________ (suffer) in a warmer world are in danger. Studies show that the polar ice
________ (reduce) by 9.8% every 10 years since 1978.At present , about 20,000 to 25,000 polar bears live in the Arctic. Polar bears depend on the sea ice for their
________ (survive). “The sea ice is more than just the platform that the bears walk
________ ,” says Andrew Derocher, who studies North American polar bear populations. “Without
________ , they can’t exist.”
Some melting and refreezing of the polar ice is natural. But in a ________ (warm) world, these cycles speed up, and bears have less time to hunt.
________ (normal), they have three months in the spring when they gain more weight and the extra fat is used later,
________ the bears are not actively hunting. Therefore, it is urgent to protect the environment and maintain the ecological balance.
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Mr. Johnson lived in the woods with his wife and children. He owned a farm, which looked almost abandoned. (lucky), he also had a cow
(produce) milk every day. He sold or exchanged some of the milk in the towns nearby for other food and made cheese and butter for the family with what
(leave). The cow was their only means of support, in fact. One day, the cow was eating grass
it began to rain heavily. While making great
(effort) to run away, she
(fall) over the hill and died. Then Johnson tried to make
living without the cow. In order to support his family, Mr. Johnson began to plant herbs (草药) and vegetables. Since the plants took a while to grow, he started cutting down trees
(sell) the wood. Thinking about his children’s clothes, he started growing cotton too. When harvest came around, he was already selling herbs, vegetables and cotton in the market
people from the town met regularly. Now
occurred to him that his farm had much potential and that the death of the cow was a bit of luck.
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Until recently daydreaming was viewed as a waste of time or it (consider) an unhealthy escape from real life and its duties. But now some people are taking a fresh look at daydreaming. Some think it may be a very
(health) thing to do. Some researchers are finding that daydreaming may be important to mental health. Daydreaming, they tell us,
a good means of relaxation. But its benefits go
this. A number of psychologists have conducted experiments and have reached some
(surprise) conclusion.
Dr. Joan T. Freyberg has concluded that daydreaming contributes growth. It also improves (concentrate),attention span, and the ability to get along with others. Industrialist Henry J.Kaiser believed that much of his success was due
the positive use of daydreaming. Florence Nightingale dreamed of becoming a nurse. The young Thomas Edison pictured
as an inventor.
For these notable achievers, it appears that their daydreams came .Dr Harry Emerson Fosdick offered this advice: “Hold a picture of yourself…in your mind’s eye, and you will be drawn toward it. Picture yourself
(vivid) as defeated and that alone will make victory impossible.
阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。将答案填写在答题卡的相应位置。
As a well-known doctor in London, John Snow was willing to help ordinary people (expose) to cholera. He knew that only when
cause of it was found could the
(dead) disease be controlled. He has two theories in mind explaining how cholera killed people.
was that cholera multiplied in the air without reason; the other was
people absorbed it into their bodies
their meals. After many
(investigate), he found the drinking water was to blame because the river
(pollute). Immediately John Snow told the people to remove the handle from the water pump
that it could not be used. Soon the disease began to slow down. To prevent the disease from
(happen) again, the water companies were instructed not to expose people to polluted water any more. Finally "King Cholera" was defeated