题目内容
15．All over the world，animals and plants are in trouble．People are trying to find ways to help them．（36）BAdopt an animal．
Many zoos and wildlife organizations have programs that let kids donate money to help a specific endangered animal．（37）F
Don't release fish or pets onto the wild．
（38）A Chances are，your pet is not native to where you live．Set loose，it might become an invasive species，or it might spread parasites （寄生虫）．So keep your fish in their tank，or find them a new home but not the pond．
（39）C
Chemicals used to kill garden weeds and bugs are a big problem for animals．Maybe if you offered to pull up the weeds instead，you could help people to use fewer poisons．
Speak up!
Share what you know and speak up for the animals．Write letters!Powerful people need to know that you care and that you're keeping an eye on them to make sure they do their jobs right and protect the planet．
Make less trash．
Pollution and plastic trash are bad for animals and nature．How can you help？
（40）G
Take your lunch in a lunchbox or reusable bag．
Bring cloth bags to the store and remind grow-ups of they forget．
A．It might seem kind to set pets free---but it isn't．
B．But what can you do in daily life？
C．Pull weeds．
D．Pulling weeds is a chore---but you said you want to help!
E．People are finding lots of ways to help the endangered species．
F．For your next birthday，why not ask your friends and family to help you adopt．
G．Bring drinks from home in a refillable bottle．
分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了一些帮助动植物的行动，动物和植物都遇到了麻烦，人们正在设法帮助他们．
解答 36．B．推理判断题．根据后文Adopt an animal可知前面提出了但是你在日常生活中能做些什么呢的疑问；故选B．
37．F．推理判断题．根据前文Many zoos and wildlife organizations have programs that let kids donate money to help a specific endangered animal可知你的下一个生日，可以请你的朋友和家人帮助你收养；故选F．
38．A．推理判断题．根据后文Chances are，your pet is not native to where you live可知它似乎是种设置宠物自由-但它不是的；故选A．
39．C．推理判断题．根据后文Maybe if you offered to pull up the weeds instead，you could help people to use fewer poisons可知你可以拔杂草；故选C．
40．G．推理判断题．根据后文Take your lunch in a lunchbox or reusable bag可知面对污染你可以从家里带自己装的饮料；故选G．
点评 考察学生的推理判断能力和联系上下文的能力，在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．此类的填空题一定要联系上下文，根据上下文的内容加上自己的理解，再作出正确的判断．
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6．Swimming cycling，jogging，skiing，dancing，walking or any of dozens of other activities can help your heart．They all cause you to feel warm and breathe heavily without being out of breath．Whether it is a structured exercise program or just part of your daily routine，all exercise adds up to having a healthier heart．（36）G
☆Choose activities that are fun and add variety．Develop several activities that you can enjoy．（37）E
☆Wear comfortable，properly fitted shoes and comfortable，loose-fitting clothing appropriate for the weather and the activity．
☆Find a convenient time and place to do activities．（38）D．If you miss an exercise opportunity，work activity into your day another way．
☆Use music to keep yourself entertained．
☆（39）CDecide what kind of support you need．Do you want them to remind you to exercise？Exercise with you regularly or occasionally？Be understanding when you get up early to exercise？Spend time with the children while you exercise？Try not to ask you to change your exercise routine？Share your activity time with others．Ask your family members，friends or co-workers for help．
☆Don't overdo it，especially at first．You can slowly increase the time and intensity （强度） of your activities as you become more fit．（40）B
☆Keep a record of your activities．Reward yourself at times．Nothing will inspire you more than success!
☆Choose activities that are fun and add variety．Develop several activities that you can enjoy．（37）E
☆Wear comfortable，properly fitted shoes and comfortable，loose-fitting clothing appropriate for the weather and the activity．
☆Find a convenient time and place to do activities．（38）D．If you miss an exercise opportunity，work activity into your day another way．
☆Use music to keep yourself entertained．
☆（39）CDecide what kind of support you need．Do you want them to remind you to exercise？Exercise with you regularly or occasionally？Be understanding when you get up early to exercise？Spend time with the children while you exercise？Try not to ask you to change your exercise routine？Share your activity time with others．Ask your family members，friends or co-workers for help．
☆Don't overdo it，especially at first．You can slowly increase the time and intensity （强度） of your activities as you become more fit．（40）B
☆Keep a record of your activities．Reward yourself at times．Nothing will inspire you more than success!
| A．see your doctor for medical advice before exercising B．Gradually，exercise on most days of the week for 30-60minutes． C．Surround yourself with supportive people． D．That way，exercise will never seem boring． E．Try to make it a habit，but be flexible（灵活的）． F．Be an active role model for your children． G．Here are some tips for exercise success． |
7．Have you ever wondered why there are so many skin colours in the world？Do you know why people living in particular areas usually have a certain colour？Biology and history are the two reasons for this．
Skin contains something called melanin，which determines a person's skin colour．The more melanin a person has，the darker his or her skin will be．The amount of and production of melanin are controlled by genes，but can be affected by other things，such as sunlight．If a person lives in a place with strong sunlight，his or her skin will protect itself by producing more melanin，making the skin darker．In a place with less sunlight，a person's body will produce less melanin，making the skin lighter．
Skin colour is also affected by another source-vitamin D．Humans all need vitamin D to build bones．People can get it by eating foods such as fish and milk，or from sunlight，which causes vitamin production in the skin．Melanin protects skin by absorbing sunlight，so sunlight absorbed by melanin cannot be used for vitamin D production．Therefore，a dark-skinned person will produce less vitamin D than a light-skinned person when they receive the same amount of sunlight．
The connection between vitamin D production and skin colour is clear when we look at evolution．The earliest humans lived in Africa，their dark skin covered with hair．When they moved to places that had less sunlight，their bodies produced less vitamin D because of their dark skin．As a result，their skin made less melanin，so they could get enough sunlight to produce vitamin D．Their skin gradually got lighter and they lost hair．Now，people who live in areas with strong sunlight，like Africa，have darker skin，while people living in other areas have lighter skin．The exception to this is the Inuit，who live in a place with little sunlight，but have dark skin because they eat a lot of fish and have enough vitamin D．
Evolution has given us a rainbow of skin colours．Humans have always had melanin to determine our skin colour．What has changed through history is the environment where we have lived．This has in turn changed our melanin production，and eventually，skin colour．
A World of Skin Colour
Skin contains something called melanin，which determines a person's skin colour．The more melanin a person has，the darker his or her skin will be．The amount of and production of melanin are controlled by genes，but can be affected by other things，such as sunlight．If a person lives in a place with strong sunlight，his or her skin will protect itself by producing more melanin，making the skin darker．In a place with less sunlight，a person's body will produce less melanin，making the skin lighter．
Skin colour is also affected by another source-vitamin D．Humans all need vitamin D to build bones．People can get it by eating foods such as fish and milk，or from sunlight，which causes vitamin production in the skin．Melanin protects skin by absorbing sunlight，so sunlight absorbed by melanin cannot be used for vitamin D production．Therefore，a dark-skinned person will produce less vitamin D than a light-skinned person when they receive the same amount of sunlight．
The connection between vitamin D production and skin colour is clear when we look at evolution．The earliest humans lived in Africa，their dark skin covered with hair．When they moved to places that had less sunlight，their bodies produced less vitamin D because of their dark skin．As a result，their skin made less melanin，so they could get enough sunlight to produce vitamin D．Their skin gradually got lighter and they lost hair．Now，people who live in areas with strong sunlight，like Africa，have darker skin，while people living in other areas have lighter skin．The exception to this is the Inuit，who live in a place with little sunlight，but have dark skin because they eat a lot of fish and have enough vitamin D．
Evolution has given us a rainbow of skin colours．Humans have always had melanin to determine our skin colour．What has changed through history is the environment where we have lived．This has in turn changed our melanin production，and eventually，skin colour．
A World of Skin Colour
| Brief introduction | People living in a particular area usually have the （71）sameskin colour and there are many different skin colours in the world． |
| Reasons for skin colour | The reasons for different skin colours mainly （72）lie/consist in biology and history． |
| Biological reasons | The amount of melanin，by which a person's skin colour is （73）determined，varies from people to people．The more melanin a person has，the （74）darkerhis or her skin will be． Vitamin D is another source （75）affectingskin colour．Vitamin D is necessary for humans to build bones．Sunlight contributes to vitamin D production in the skin． |
| （76）Historical reasons | The earliest people in Africa had dark skin with hair covering it because the sunlight is very strong．． When they moved to places where they could not get enough sunlight to （77）producevitamin D，their skin colour became lighter． Generally speaking，people in areas with strong sunlight，have darker skin （78）whilepeople in other areas have lighter skin． |
| （79）Conclusion/Summary | Melanin （80）playsan important role in our skin colour．With our living environment changing，melanin production is changed，which leads to the changes in our skin colour． |
4．In the winter of 1990，I was asked to appear on a television talk show in Toronto，Ontario，Canada．At the end of our first day of taping，I was on my way back to my 24-hour-room-service （36）B when I saw something shocking．
On the sidewalk in four inches of snow was a man （37）A with only a cardboard to keep him from being completely （38）Cto the freezing cold．What really broke my heart was when I （39）D that he wore no shoes and socks．
I wanted to stop and help him，（40）AI was not quite sure what to do．As the traffic light turned green，it seemed life was demanding that I （41）B．So I did．Back in"anything I wanted was mine"environment of my hotel，I immediately （42）Cabout the man on the street．Several days later，I was eating Danish at the station．All of the"important"people had （43）B the room and it was just me and the doorman remaining．
I had seen him （44）C go about his business every day without saying a word except，（45）D，When I asked him how he was （46）Ctoday，he told me that he'd been having to ride his bike to work in the snow and that he'd been feeling rather （47）C for himself…that is，until he saw a man sleeping down on the corner of the street with just a （48）B for covering from the cold and no shoes．I almost （49）D on my Danish as I heard him go on to relate how he was so moved with （50）A for the man that he bought the man a pair of socks and shoes．
As I heard his stay，I saw in my mind a （51）C that used to be in an old friend's bedroom when I was a teenager．It was a picture of a child _52_A someone a flower and the （53）D below read：'The （54）B deed often exceeds （胜过） the grandest of intentions．"As Mother Teresa （55）B it，"none of us can do anything great on our own，but we can all do a small thing with great love．"
On the sidewalk in four inches of snow was a man （37）A with only a cardboard to keep him from being completely （38）Cto the freezing cold．What really broke my heart was when I （39）D that he wore no shoes and socks．
I wanted to stop and help him，（40）AI was not quite sure what to do．As the traffic light turned green，it seemed life was demanding that I （41）B．So I did．Back in"anything I wanted was mine"environment of my hotel，I immediately （42）Cabout the man on the street．Several days later，I was eating Danish at the station．All of the"important"people had （43）B the room and it was just me and the doorman remaining．
I had seen him （44）C go about his business every day without saying a word except，（45）D，When I asked him how he was （46）Ctoday，he told me that he'd been having to ride his bike to work in the snow and that he'd been feeling rather （47）C for himself…that is，until he saw a man sleeping down on the corner of the street with just a （48）B for covering from the cold and no shoes．I almost （49）D on my Danish as I heard him go on to relate how he was so moved with （50）A for the man that he bought the man a pair of socks and shoes．
As I heard his stay，I saw in my mind a （51）C that used to be in an old friend's bedroom when I was a teenager．It was a picture of a child _52_A someone a flower and the （53）D below read：'The （54）B deed often exceeds （胜过） the grandest of intentions．"As Mother Teresa （55）B it，"none of us can do anything great on our own，but we can all do a small thing with great love．"
| 36．A．station | B．hotel | C．home | D．studio |
| 37．A．sleeping | B．sighing | C．begging | D．praying |
| 38．A．limited | B．accustomed | C．exposed | D．addicted |
| 39．A．feared | B．suspected | C．imagined | D．realized |
| 40．A．but | B．and | C．or | D．so |
| 41．A．get off | B．move on | C．turn back | D．pull over |
| 42．A．thought | B．talked | C．forgot | D．learned |
| 43．A．fled | B．left | C．entered | D．crowded |
| 44．A．lazily | B．freely | C．quietly | D．actively |
| 45．A．complaints | B．comments | C．apologies | D．greetings |
| 46．A．performing | B．working | C．feeling | D．coming |
| 47．A．shy | B．fortunate | C．sorry | D．happy |
| 48．A．blanket | B．cardboard | C．quilt | D．sheet |
| 49．A．concentrated | B．insisted | C．chewed | D．choked |
| 50．A．sympathy | B．respect | C．admiration | D．sorrow |
| 51．A．booklet | B．letter | C．poster | D．notice |
| 52．A．handing | B．returning | C．donating | D．sending |
| 53．A．note | B．illustration | C．description | D．caption |
| 54．A．greatest | B．smallest | C．wisest | D．funniest |
| 55．A．means | B．puts | C．makes | D．gets |
5．--Let's go out for a walk after dinner，OK？
---_______．I'd like to take a fresh breath．（ ）
---_______．I'd like to take a fresh breath．（ ）
| A． | Out of the question | B． | Forget it | ||
| C． | That's all right | D． | I couldn't agree more |