19．If penicillin hadn't been available.many people would have died from bacterial illnesses．Without ——青夏教育精英家教网—

19．If penicillin hadn't been available，many people would have died from bacterial illnesses．
Without penicillin，many people would have lost their livesas a result of bacterial illnesses．

15．As the 2016Presidential election（选举）is approaching，US high school students have become more interested in the election．They hope to have a voice in the process and，ultimately（最终），have a say in deciding the next US president．
Cypress Bay High Junior Jacob Wilentz is one such student and he said the country needs change．Although Wilentz will only be 17this November，he said his opinion still counts．
"Even though I will not be old enough to vote in the next presidential election，my voice matters，as do the voices of every other individual in this country，"Wilentz said．"Discussions I may have with my peers，debates with teachers and communication with my parents allow me to be heard and give my opinions meaning and insight（洞察力）．"
Alain Jean，who was the 2008African American/Caribbean American vote director for Barack Obama in the state of Florida，said teenagers should be paying attention to the presidential election because many high school students will be of voting age by election time．She said candidates（候选人） have views and positions on certain topics that may affect teen's lives．
Cypress Bay High Junior Olivia Ohayon is concerned about issues that younger Americans face，such as the cost of college education．
Ohayon said，"I believe it is my responsibility to discuss，and try to persuade my parents and other adults to concern themselves with，the issues important to the younger generation when casting their vote for president．"
Not only do teenagers think their voices are important，but some also think parents have to consider the views of their children when casting their vote．According to Lucy Rimalower，a licensed marriage and family therapist（治疗专家），parents must consider whether their vote represents their household and the teens living in it．
Jean said teenagers can also influence the elections in other ways by getting involved in campaigns．She suggests that teenagers who actually believe in one of the candidates find the local headquarters（总部） for a campaign and volunteer．Campaign volunteers stuff envelopes，wave signs and go into neighborhoods to drop off literature（宣传材料） and try to get the word out．
62．Which of the following statements is TURE？B
A．Most US high school students have the right to vote in the presidential election．
B．Teenagers can influence the election by expressing their opinions．
C．Wilentz is interested in the election because he enjoys debates and discussions．
D．Students below voting age are not allowed to participate in election campaigns．
63．According to Alain Jean，B．
A．teenagers are too young to take part in the election
B．the candidates'views could influence students'lives
C．candidates should pay more attention to teenagers'opinions
D．students should be prepared for voting from an early age
64．According to Rimalower，parents should consider the views of their children during the election becauseC．
A．they should respect their children's right to vote
B．the election process could help their children develop debating and thinking skills
C．their votes should represents not only themselves but also other family members
D．they could reduce the cost of education for their children
65．What can we infer from the article？B
A．Parents do not like their children to participate in elections．
B．Many people encourage teenagers'involvement in the election process．
C．Candidates who care more about the younger generation's issues are more likely to win．
D．Students who are interested in elections only care about themselves．

14．If a diver surfaces（浮出水面） too quickly，he may suffer the bends（减压病）．Nitrogen （氮） dissolved （溶解） in his blood is suddenly liberated（释放）by the reduction of pressure．The consequence，if the bubbles （气泡） accumulate in a joint，is sharp pain and a bent 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（鱼龙）．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 themselves 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 150million years．To this end，he and his colleagues traveled the world's natural-history museums，looking at hundreds of ichthyosaurs from the Triassic（三叠纪） period and from the later Jurassic（侏罗纪） and Cretaceous（白垩纪） periods．
When he started，he assumed that signs of the bends would be rarer in younger fossils，reflecting their gradual evolution（进化）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．
58．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．
59．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
60．Rothschild's finding stated in Paragraph 4C．
A．confirmed his assumption
B．speeded up his research process
C．disagreed with his assumption
D．changed his research objectives
61．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．

13．We both strongly _________ your going to Syria at this time．It's not a wise decision．（　　）

12．"Chinese dama"，a group ________ mainly of married women between 40and 60，_____ the attention of the public for the first time in 2013．（　　）

	A．	consisted；grabbing		B．	consisting； grabbing
	C．	consisting； grabbed		D．	consisted； grabbed

11．Satellites also make TV accessible to people who live far away from cities．
Satellites also makesit possible for people far away from cities tohave access to TV．

10．As we know，men tend to be moreaggressive（富于攻击性的） than women．

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