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Unit 2单元加餐练
Ⅰ.阅读理解
Scientists in England are using two self-directed water vehicles to explore the animal and plant life of the Celtic Sea.
The Celtic Sea is a body of water off the southern coast of Ireland. The area is known for its unusual sea life. Scientists want to know why sea creatures are so attracted to this part of the Atlantic Ocean.
One of the research vehicles is powered by batteries (电池). It collects information for the National Oceanography Center in Southampton, England, and the World Wildlife Fund. The vehicle's low energy requirements permit it to stay floating on water for up to 30 days. Reports of what it finds in the Celtic Sea are sent by satellite.
Stephen Woodward is an engineer who helped design the vehicle. He says the vehicle has equipment that can discover small organisms called zooplankton (浮游动物) and fish. He adds that other sensing equipment measures water currents and other features of sea life. The vehicle also creates a map of the sea.
Another vehicle is powered by the sun and the wind. It can stay floating on water for months. The robotic vehicle sends information about the so-called biodiversity hotspots. A biodiversity hotspot is an area of an ocean that has a lot of plant and animal life activity.
Lavinia Suberg is one of the scientists studying the Celtic Sea. She says productive ocean areas, like the Celtic Sea, attract zooplankton. The zooplankton then attracts fish. She adds that areas with a large increase of fish often attract sea mammals and birds.
Using these robotic ocean vehicles greatly reduces the cost of exploring the sea with manned laboratories. Scientists can spend more time analyzing the collected information. They say the research will give them a better understanding of the needs of the Celtic Sea for future management and protection.
语篇解读：本文为说明文。英国科学家利用水中机器人探索凯尔特海，旨在弄清为什么有如此之多的动植物生活在该海域。
1．Why do the British scientists explore the Celtic Sea? A．To study the geography of the sea. B．To learn why the sea is rich in sea life. C．To test their self-directed water vehicles D．To learn about the sea creatures in the sea.
解析：选B 推理判断题。由第二段“Scientists want to know why sea creatures are so attracted to this part of the Atlantic Ocean”可知，研究旨在弄清为什么凯尔特海富含海洋生物。
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2．According to the text, the water vehicles ________. A．are controlled directly by humans B．work depending on the map of the sea C．can send the information back directly D．can keep floating on water for a long time
解析：选D 细节理解题。由第三段“The vehicle's low energy requirements permit it to stay floating on water for up to 30 days”和第五段“It can stay floating on water for months”可知，它们都能在海中漂浮很久。
3．According to Lavinia Suberg, the sea mammals and birds ________. A．are afraid of living alone B．mainly feed on zooplankton C．like to live in warm ocean areas D．are especially interested in fish
解析：选D 细节理解题。由倒数第二段“She adds that areas with a large increase of fish often attract sea mammals and birds”可知，它们对鱼很感兴趣。
4．What is the last paragraph mainly about? A．The aim of sea exploration. B．The cost of exploring the sea. C．The importance of the water vehicles. D．Ways to deal with the collected information.
解析：选C 段落大意题。由最后一段“greatly reduces”， “spend more time”和“a better understanding”可知，本段旨在介绍这两个水中机器人在海底探索中的重要性。
Ⅱ.阅读七选五
How to concentrate on studies
How to get your mind to concentrate on studies when there are all possible distractions (分心的事)? This is the biggest question that students face when it's exam time. Well, here are some tips that can help you with concentration.
Plan your timetable.
__1__ However, be realistic with your timetable and do not expect too much out of yourself. __2__ If you study for 5 hours without rest, you maybe get bored. So it is advised that you keep on changing your subjects so that you do not get bored. However, make sure you study at least 2
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hours at each subject at a stretch (一段时间)．
Take interest.
Unless you like what you are doing, it is not possible to focus on that task.__3__ You can start with your favorite subject and move on to difficult ones, once you begin to study. You can also take the difficult subject when your mind is most refreshed.
Set up a study area.
It is better to have a study room where you can concentrate properly without any distractions. If that is not possible, you can set up a study table in a separate corner in your home.__4__ __5__ Your mind will be at its sharpest only if you let it rest for enough time. Sleep for at least 6－8 hours depending upon your individual requirements. Eat healthy meals and reward yourself some free time after studies.
A．Get enough rest. B．Introduce variety. C．Get rid of distractions.
D．You may even ask a friend to study with you. E．It is always best to have a plan before studying. F．So you have to take interest in what you are studying.
G．Make sure you study at this place so that you can help your mind focus. 答案：1～5 EBFGA Ⅲ.完形填空
One day, my father drove his employer to another city for a business meeting. On the outskirts (郊区) of town, they __1__ for a sandwich lunch. While they ate, several boys playing in the street passed by their __2__. One of the boys limped (跛行). Looking more closely, my father's boss __3__ that the boy had a clubfoot (畸形足). He stepped out of the car and __4__ the boy, saying that he was able to help get that foot fixed. The young boy was __5__. The businessman wrote down the boy's name before the boy joined his friends down the street.
The man __6__ and said to my father，“Woody, the boy's name is Jimmy. Find out where he __7__ and do your best to get his parents'__8__ to let him have his foot operated on. I'll pay all the costs.” They finished their sandwiches and went on their __9__. It didn't take long for my father to __10__ Jimmy's house, a small one that needed paint and repair. For almost an hour, my father __11__ explained the plan to Jimmy's parents. __12__， they looked at each other. When my father __13__ they still weren't quite sure about the generous offer from an unknown benefactor (捐助者).
Later, my father's employer got in touch with the local government with a __14__ to send someone to Jimmy's home to __15__ the family that this was a lawful offer. Soon, with
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permission papers signed, my father took Jimmy to an excellent __16__ in another state. After five operations, his limp disappeared.
His parents watched in __17__ as the returned boy stepped lightly toward them. They still could not __18__ that a man they had never seen would pay a large sum of money to have a foot corrected for their son.
The __19__ benefactor was Mr. Henry Ford, the founder of the Ford Motor Company. He always said it's more fun to do something for people __20__ they don't know who did it. 语篇解读：本文是记叙文。福特汽车公司的创始人亨利?福特匿名捐助了一个男孩，治好了他的跛足。
1．A.waited C．prepared
B．paid D．stopped
解析：选D 由上文的“One day, my father ... business meeting”可知，作者的父亲开车送他的老板去另外一个城市开商务会议。他们来到市郊“停下(stopped)”吃一顿便饭。
2．A.car C．office
B．town D．restaurant
解析：选A 由下文的“He stepped out of the car”可知，他们在汽车里吃的三明治。可以判断，孩子们路过了这辆“汽车(car)”。
3.A.thought C．doubted
B．observed D．worried
解析：选B 由上文的“Looking more closely”可知，老板对那个男孩进行了仔细的观察。observe“看到，观察到”。
4.A.took care of C．hung out with
B．got hold of D．caught up with
解析：选D 由上文可知，孩子们路过了这辆车，逐渐走远了。老板下了车，“追上(caught up with)”男孩，说他可以帮助男孩矫正跛足。
5.A.delighted C．interested
B．satisfied D．relaxed
解析：选A 有人愿意帮助自己消除残疾，男孩自然很“高兴(delighted)”。 6.A.laughed C．returned
B．apologized D．nodded
解析：选C 由上文可知，老板下车以后追上男孩，记下了他的名字，然后应该“回到