题目内容
17．Dangers from Outer SpaceWhat is the greatest threat to life on our planet？Is it climate change？Shortages of food or water？Or might an altogether bigger danger come from somewhere further away：space？
We're not talking about an attack by little green men here．Instead，how about being hit by a large falling star，beat by deadly universal rays or fried by the energy of an erupting star？
It wouldn't be the first time that our Earth has had a rough ride over the last 3.7 billion years，with some disastrous events．The most famous mass extinction（灭绝）was 66 million years ago，when it's widely believed that a meteorite（陨石）killed off the dinosaurs．A 110-mile-wide crater in Mexico with the same geological age supports this theory．
Believe it or not，this wasn't the worst catastrophe in our planet's history．That was when 96% of life was wiped out at the end of the Permian period，252 million year ago．Scientists don't know for sure why this happened，but any potential explanations carry with them the possibility that similar events could happen again．
Some experts believe that our Sun has a twin star which is too far away to observe directly．This huge sleeping star could twist the paths of orbiting icy rocks and cast them towards the rest of the Solar System．
Is this what happened 252 million years ago？Or is there instead，perhaps，a distant，ninth plant in our Solar System which pulls in passing comets（彗星）and sends them dashing our way？
The Sun that has given us the warmth is gradually turning into a deadly enemy．Like all stars，it is slowing dying，burning through its energy supplies．As it does so，it expands，and in about 2billion years it will have grown so much that the heat will make life on planet Earth unbearable．
While all this sounds a little horrible，take comfort from the fact that the chance of being hit by a huge interstellar projectile（星际碰撞物）is unbelievably slim，and that 2billion years is a very long time．
32．When did dinosaurs die out according to the passage？C
A.3.7 billion years ago．
B.252 million years ago．
C.66 million years ago．
D.2 billion years ago．
33Why was 96% of life destroyed at the end of the Permian period？A
A．The cause is still unknown．
B．A huge falling star hit the earth．
C．A twin star cast icy rocks towards the Solar System．
D．A ninth planet pulled in passing comets．
34．What can we learn from the passage？A
A．All stars will eventually run of energy．
B．Our planet will be attacked by little green men．
C．We will be fried by the energy of an erupting star．
D．A huge sleeping star will hit the earth in millions of years．
35．What is the author's attitude toward the dangers from outer space？B
A．Frightened．
B．Relieved．
C．Worried．
D．Doubtful．
分析 本文通过恐龙的灭举引出了人类可能面临的来自外太空的威胁．并对其进行了接单的描述，不过一切都只是猜测，大家大可放心．
解答 32．C 细节题．根据文章内容，The most famous mass extinction（灭绝）was 66 million years ago，when it's widely believed that a meteorite（陨石）killed off the dinosaurs人们认为大约在六千六百万年前，恐龙死于陨石对他们的袭击，结合选项，故选C
33．A 细节题．根据文章内容，That was when 96% of life was wiped out at the end of the Permian period，252 million year ago．Scientists don't know for sure why this happened…大约在252 million 年前的二叠纪时期，百分之96的生物都灭绝了，科学就爱到目前也不知道具体的原因是什么，
34．A 细节题．根据文章内容，The Sun that has given us the warmth is gradually turning into a deadly enemy．Like all stars，it is slowing dying，burning through its energy supplies给予我们光热的太阳正在慢慢的耗尽它的能量．像所有的星星一样，也在慢慢死亡，直到某一天燃尽他们的能量．结合选项，故选A
35．B 推理题．根据文章内容，While all this sounds a little horrible，take comfort from the fact that the chance of being hit by a huge interstellar projectile（星际碰撞物）is unbelievably slim尽管听起来，所有的事情都有一点糟糕，但是请放轻松，我们地球被撞到的机会还是很小的，而且离地球耗尽支撑我们的资源的日子还很远很远，结合选项，故选B
点评 本文是一个科教类阅读，题目涉及多道细节理解题，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项选出正确答案．推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案，切忌胡乱猜测，一定要做到有理有据．
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8．A selfie stick is a monopod（单脚架）used to take selfie photographs by positioning a smartphone or camera beyond the normal range of the arm．The metal sticks are typically extendable，with a handle on one end and an adjustable clamp（夹子）on the other end to hold a phone in place．Some have remote or Bluetooth controls，letting the user decide when to take the picture，and models designed for cameras have a mirror behind the viewscreen so that the shot can be lined up．In contrast to a monopod for stabilizing a camera on the ground，a selfie stick's arm is thickest and strongest at the opposite end from the camera in order to provide better grip（控制）and balance when held high up in the air．
Homemade selfie sticks could date back as early as 1925．A photo from that year shows a man taking a photograph of himself and his wife，with the aid of a long pole which is pointed towards the camera and out of frame．Amateur box cameras of the period would not have been able to capture a self-portrait in focus when held at arm's length，requiring photographers to use remote shutter （快门） devices such as cables or sticks．
The 1983 Minolta Disc film"Disc-7"camera had a convex mirror on its front to allow the composition of self-portraits，and its packaging showed the camera mounted on a stick while used for such a purpose．A"telescopic extender"for compact handheld cameras was patented in U．S．in 1983．Canadian inventor Wayne Fromm patented his Quik Pod in 2005，and it became commercially available in the United States the following year．Despite positive reviews for the Quik Pod over the next few years in mainstream press，the term"selfie stick"itself did not become widely used until 2014．
People attach their cell phone or camera to the end of the selfie stick，raise it in front of themselves and then make a sound or press a Shutter button"shutter button on the stick handle which is connected to the camera （usually using a port such as a Phone connector （audio）"headphone jack），or press a button on a wireless remote （often via Bluetooth"Bluetooth），or use the camera's built-in timer to take a photo after a number of seconds have passed．The first two methods usually adapt the device's physical means of pressing the camera shutter such as the volume controls or the dedicated camera button of the device，which are replicated（复制）on Headphones"headphones with on-cord controls，and are seen by the device as headphone devices．
The device gives more practical use in situations that require assistance for difficult photographs．It allows the user to take photographs in otherwise dangerous situations such as taking a photo over a cliff or from the door of an airplane．The device is sometimes used to take selfies that involve the photographer inside a moving vehicle．
Enlarge"Bans and restrictions on the use of selfie sticks have been imposed across a range of public venues（场所）generally on the grounds of safety and inconvenience to others．
Several concert venues in Australia and the United Kingdom have banned the use of selfie sticks，along with some music festivals in the United States．Organisers have cited their role in the"illegal recording"of bands'sets，and the inconvenience and safety issues to fellow audience members．The sticks have been banned in some museums，galleries and historical sites because of concerns about possible damage to artworks and other objects．
Theme parks including Walt Disney World Resort"Walt Disney World Resortand Six Flags"Six Flags have banned selfie sticks．The sticks have always been banned on rides at Disney World for safety reasons，but after a number of instances where rides had to be stopped because of a guest pulling out a selfie stick in mid-ride，such as incidents on California Screamin'"California Screamin'and Big Thunder Mountain Railroad"Big Thunder Mountain Railroad，Disney issued a park-wide ban on the accessorie（配件）．
Homemade selfie sticks could date back as early as 1925．A photo from that year shows a man taking a photograph of himself and his wife，with the aid of a long pole which is pointed towards the camera and out of frame．Amateur box cameras of the period would not have been able to capture a self-portrait in focus when held at arm's length，requiring photographers to use remote shutter （快门） devices such as cables or sticks．
The 1983 Minolta Disc film"Disc-7"camera had a convex mirror on its front to allow the composition of self-portraits，and its packaging showed the camera mounted on a stick while used for such a purpose．A"telescopic extender"for compact handheld cameras was patented in U．S．in 1983．Canadian inventor Wayne Fromm patented his Quik Pod in 2005，and it became commercially available in the United States the following year．Despite positive reviews for the Quik Pod over the next few years in mainstream press，the term"selfie stick"itself did not become widely used until 2014．
People attach their cell phone or camera to the end of the selfie stick，raise it in front of themselves and then make a sound or press a Shutter button"shutter button on the stick handle which is connected to the camera （usually using a port such as a Phone connector （audio）"headphone jack），or press a button on a wireless remote （often via Bluetooth"Bluetooth），or use the camera's built-in timer to take a photo after a number of seconds have passed．The first two methods usually adapt the device's physical means of pressing the camera shutter such as the volume controls or the dedicated camera button of the device，which are replicated（复制）on Headphones"headphones with on-cord controls，and are seen by the device as headphone devices．
The device gives more practical use in situations that require assistance for difficult photographs．It allows the user to take photographs in otherwise dangerous situations such as taking a photo over a cliff or from the door of an airplane．The device is sometimes used to take selfies that involve the photographer inside a moving vehicle．
Enlarge"Bans and restrictions on the use of selfie sticks have been imposed across a range of public venues（场所）generally on the grounds of safety and inconvenience to others．
Several concert venues in Australia and the United Kingdom have banned the use of selfie sticks，along with some music festivals in the United States．Organisers have cited their role in the"illegal recording"of bands'sets，and the inconvenience and safety issues to fellow audience members．The sticks have been banned in some museums，galleries and historical sites because of concerns about possible damage to artworks and other objects．
Theme parks including Walt Disney World Resort"Walt Disney World Resortand Six Flags"Six Flags have banned selfie sticks．The sticks have always been banned on rides at Disney World for safety reasons，but after a number of instances where rides had to be stopped because of a guest pulling out a selfie stick in mid-ride，such as incidents on California Screamin'"California Screamin'and Big Thunder Mountain Railroad"Big Thunder Mountain Railroad，Disney issued a park-wide ban on the accessorie（配件）．
| Some Aspects of a Selfie Stick | |
| Definition | ●A selfie stick is a one-legged support for a smartphone or camera．It is made of metal and can be made （71）longer/extended/extendable． |
| ●A selfie stick's arm is thickest and strongest at the opposite end when compared to a monopod for keeping a camera （72）stable/steady/stabiliz（s）ed/balancedon the ground | |
| History | ●Homemade selfie sticks could date from 1925 when amateur box cameras required photographers （73）makeuse of remote shutter devices． |
| ●A"telescopic extender"for compact handheld cameras was granted a （74）patentin 1983． | |
| ●Although Quik Pod got excellent reviews，the term"selfie stick"was not in （75）fashion/style/popularityuntil 2014． | |
| Usage | ●When taking photos，people can press a shutter button on the stick handle or press a button on a wireless （76）remotecontrol，or use the camera's built-in timer． |
| ●When taking difficult photos，people can use selfie sticks to （77）keepthemselves away from dangerous situations． | |
| Bans and restrictions | ●（78）Considering/Givensafety issues and inconvenience，lots of public places restrict the use of selfie sticks． |
| ●The sticks have been prohibited in a wide （79）range/varietyof sites in case they cause possible damage to other objects． | |
| ●After a number of （80）instances/incidents/accidents/caseswhere rides had to be stopped，Disney issued a park-wide ban on the sticks． | |
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| A． | where | B． | which | C． | that | D． | there |