Astraightline is the shortest distance between mo points．题目和参考答案——青夏教育精英家教网——

题目内容

18．Astraight（直的）line is the shortest distance between mo points．

分析两点之间直线距离最短．

解答答案：straight直的，形容词；句中是修饰名词line，直接填原形即可．

点评翻译填空题考查的是词汇的记忆和运用能力，平时要注意积累和运用．同时还要注意区分近义短语．

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5．Some people are like homing pigeons：Drop them off anywhere，and they'll find their way around．Other people，though，can't tell when they're holding a map upside down．Are the directionally challenged just bad learners？
Not all of your navigational （导航的）skills are learned．Research shows that your sense of direction is innate．An innate ability is something you are born with．Your brain has special navigational neurons-head-direction cells，place cells，and grid cells （网格细胞）-and they help program your inside compass when you're just a baby．
In 2010，scientists carried out an experiment to study baby rats'neural activity in their brains．Although the rats were newborns，the researchers discovered that their head-direction cells （which help them recognize the direction they're facing） were fully grown and developed．The rats，it seemed，were born with a sense of direction．And they hadn't even opened their eyes yet!
Humans，of course，are not rats．But the hippocampus-the brain area we use for navigation-is similar in most mammals．If the rat's compass develops this way，then it's likely that a human's compass does，too．
If we're born with a sense of direction，then why are some people so good at getting lost？The scientists found that the two other cells-place and grid cells-developed within the first month．Place cells are thought to help us form a map in our mind，while grid cells help us navigate new and unfamiliar places．The two cells work together，and that's where the trouble might be．
People who took part in a 2013 study played a video game that required them to travel quickly between different places．Monitoring their brains，the scientists found that grid cells helped the gamers recognize where they were-even without landmarks．According to researcher Michael Kahana，differences in how grid cells work may help explain why some people have a better sense of direction than others．
32．What did the 2010 research find？A
A．Rats have a natural ability to recognize directions．
B．Rats'hippocampus is different from that of humans．
C．Rats usually find their way without opening their eyes．
D．Baby rats have as many head-direction cells as grown-ups．
33．What do we know about our navigational neurons？D
A．Place cells let us know how to read a map．
B．Grid cells help us reach the place we are going to．
C．They help us use a compass when we lose our way．
D．Place and grid cells grow later than head-direction cells．
34．Why are some people so good at getting lost？B
A．They can't remember landmarks．
B．Their grid cells can't work very well．
C．They are unfamiliar with new places．
D．Their ability to follow directions is poor．
35．What is the text mainly about？A
A．Human navigational skills．
B．The compass in rats'body．
C．Why grid cells are useful．
D．How homing pigeons work．

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6．treat（　　）

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7．Want to find a job？Now read the following advertisements．
FAIRMONT HOTEL
Five waiters and Ten Waitresses
---Aged under 22
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One Secretary
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567Wood Street，San Markers，78003
Fax：6954828
WILSON BOOKSTORE
Accountants（会计）
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Tel：447-4398Fax：3485269
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A．have to be a woman and know foreign languages
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