The latest model of camera can brings the object into focus.with which even a child can shoot very well．( )A．instantlyB．automaticallyC．steadilyD．randomly 题目和参考答案——青夏教育精英家教网—

题目内容

14．The latest model of camera can brings the object into focus，with which even a child can shoot very well．（　　）

A．

instantly

B．

automatically

C．

steadily

D．

randomly

分析最新款的相机能够主动聚焦，用它的话小孩子都可以拍出不错的相片．

解答答案：B
instantly立即，马上；automatically自动地；steadily稳定地；randomly漫无目标地．根据句意，故选B．

点评形容词辨析是常考的知识点，形容词数量众多，用法灵活．学习时，要注意积累．特别是相似或相近的词要注意区分和掌握．

练习册系列答案

16．Once ____ the forest，you ought to remain ____ you are waiting for help．（　　）

2．Fear may be felt in the heart as well as in the head，according to a study that has found a link between the cycles of a beating heart and the chance of someone feeling fear．
Tests on healthy volunteers found that they were more likely to feel a sense of fear at the moment when their hearts are contracting（收缩） and pumping blood around their bodies，compared with the point when the heartbeat is relaxed．Scientists say the results suggest that the heart is able to influence how the brain responds to a fearful event，depending on which point it is at in its regular cycle of contraction and relaxation．
Sarah Garfinkel at the Brighton and Sussex Medical School said："Our study shows for the first time that the way in which we deal with fear is different depending on when we see fearful pictures in relation to our heart．"
The study tested 20healthy volunteers on their reactions to fear as they were shown pictures of fearful faces．Dr Garfinkel said，"The study showed that fearful faces are better noticed when the heart is pumping than when it is relaxed．Thus our hearts can also affect what we see and what we don't see-and guide whether we see fear．"
To further understand this relationship，the scientists also used a brain scanner（扫描仪） to show how the brain influences the way the heart changes a person's feeling of fear．
"We have found an important mechanism by which the heart and brain‘speak'to each other to change our feelings and reduce fear，"Dr Garfinkel said．
"We hope that by increasing our understanding about how fear is dealt with and ways that it could be reduced，we may be able to develop more successful treatments for anxiety disorders，and also for those for those who may be suffering from serious stress disorder．"
47．What is the finding of the study？A
A．One's heart affects how he feels fear．
B．fear is a result of one's relaxed heartbeat．
C．fear has something to do with one's health．
D．Ones fast heartbeats are likely to cause fear．
48．The study was carried out by analyzingC．
A．volunteers'heartbeats when they saw terrible pictures
B．the time volunteers saw fearful pictures and their health conditions
C．volunteers'reactions to horrible pictures and data form their brain scans
D．different pictures shown to volunteers and their heart-brain communication
49．Which of the following is closest in meaning to"mechanism"in Paragraph 6？B
A．Order．B．system．C．Machine．D．Treatment．
50．This study may contribute toA．
A．treating anxiety and stress better
B．explaining the cycle of fear and anxiety
C．finding the sky to the heart-brain communication
D．understanding different fears in our hearts and heads．

9．BEIJING，（Xinhua）-China's capital city launched its first underground library，"M Subway Library"on Jan.12，2015．The theme of its first activity is"Our Characters"．Citizens riding the special tain on subway Line 4now can read e-books provided by the National Library by scanning the QR code in the carriage．
"M Subway Library"is a public welfare program initiated by the Beijing MTR and the National Library to provide qualified book resources to the public through the platform of public transportation．The library will organize different themed activities regularly and recommend a dozen free books to the public each year in the long term．
XINING，（Xinhua）-A bullet train made its maiden trip from Xining city to Lanzho city in Northwest China on Dec.26，2014，marking the start of the full operations of the Lanxin high-speed railway．The Lanxin high-speed railway links Urumqi in the Xinjiang Uygur Autonomous Region with Xining，capital of Qinghai Province，and Lanzhou，capital of Gansu Province，slashing the total travel time from more than 23hours to 11hours and 50inutes．The 1，776-kilometer high-speed rail line，with a designed speed of 250kilometers per hour，is China's first high-speed railway built in a high-altitude region．
NINGBO，（Xinhua）-Ningbo Subway Line 1started running special trains with 3D paintings featuring the city's culture starting on Dec.20，2014．Through the paintings，the city in East China's Zhejiang province seeks to share its culture and attract more outside visitors．The paintings focus on four themes：rice cake，fishing festival，books and Buddhism．

13．The purpose of launcing"M Subway Library"is toD．
A．earn more money by making advertisements in the carriage
B．attract more tourists to come to Beijing to take the subway
C．make the idea of"Green Travel"go deep into people's mind
D．offer the passengers an additional reading platform
14．Which of the following statements is correct according to the news？C
A．The Lanxin high-speed railway covers Gansu，Xinjiang and Tibet．
B．It is China's first high-speed railway．
C．It has a length of 1，776kilometers．
D．It will take you 11hours and 50minutes to travel from Xining to Urumqi．
15．What can you enjoy when you ride the special train on subway Line 1in Ningbo？B
A．Chinese classical music．
B．3D paintings about Ningbo's culture．
C．Traditional Chinese paintings．
D．3D films which were shot in Ningbo．

19．People realize that the new development in technology can and _____ marketing activities．（　　）

	A．	will have affected		B．	was affecting
	C．	did affect		D．	does affect

6． he talked about it to reporters surprised me．（　　）

3．-I thought you would join in my birthday party tomorrow．
-I would if I ____ to attend an important meeting．（　　）

13．If a diver surfaces too quickly，he may suffer the bends．Nitrogen（氮） dissolved（溶解） in his blood is suddenly liberated by the reduction of pressure．The consequence，if the bubbles （气泡）accumulate in a joint，is sharp pain and abent body-thus the name．If the bubbles form in his lungs or his brain，the consequence can be death．
Other air-breathing animals also suffer this decompression（减压） sickness if they surface too fast：whales，for example．And so，long ago，did ichthyosaurs．That these ancient sea animals got the bends can be seen from their bones．If bubbles of nitrogen form inside the bone they can cut off its blood supply．This kills the cells in the bone，and consequently weakens it，sometimes to the point of collapse．Fossil （化石）bones that have caved in on them selves are thus a sign that the animal once had the bends．
Bruce Rothschild of the University of Kansas knew all this when he began a study of ichthyosaur bones to find out how widespread the problem was in the past．What he particularly wanted to investigate was how ichthyosaurs adapted to the problem of decompression over the 150 million years．To this end，he and his colleagues traveled the world's natural-history museums，looking at hundreds of ichthyosaurs from the Triassic period and from the later Jurassic and Cretaceous periods．
When he started，he assumed that signs of the bends would be rarer in younger fossils，reflecting their gradual evolution of measures to deal with decompression．Instead，he was astonished to discover the opposite．More than 15% of Jurassic and Cretaceous ichthyosaurs had suffered the bends before they died，but not a single Triassic specimen（标本） showed evidence of that sort of injury．
If ichthyosaurs did evolve an anti-decompression means，they clearly did so quickly-and，most strangely，they lost it afterwards．But that is not what Dr Rothschild thinks happened．He suspects it was evolution in other animals that caused the change．
Whales that suffer the bends often do so because they have surfaced to escape a predator （捕食动物） such as a large shark．One of the features of Jurassic oceans was an abundance of large sharks and crocodiles，both of which were fond of ichthyosaur lunches．Triassic oceans，by contrast，were mercifully shark-and crocodile-free．In the Triassic，then，ichthyosaurs were top of the food chain．In the Jurassic and Cretaceous，they were prey（猎物） as well as predator-and often had to make a speedy exit as a result．

61．Which of the following is a typical symptom of the bends？A
A．A twisted body．
B．A gradual decrease in blood supply．
C．A sudden release of nitrogen in blood．
D．A drop in blood pressure．
62．The purpose of Rothschild's study is to seeB．
A．how often ichthyosaurs caught the bends
B．how ichthyosaurs adapted to decompression
C．why ichthyosaurs bent their bodies
D．when ichthyosaurs broke their bones
63．Rothschild'sfindingstatedinParagraph4C．
A．confirmed his assumption
B．speeded up his research process
C．disagreed with his assumption
D．changed his research objectives
64．Rothschild might have concluded that ichthyosaursA．
A．failed to evolve an anti decompression means
B．gradually developed measures against the bends
C．died out because of large sharks and crocodiles
D．evolved an anti decompression means but soon lost it．

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