18．If you planed to remain in the United States for any length of time.you will soon find too expens——青夏教育精英家教网——

18．If you planed to remain in the United States for any length of time，you will soon find too expensive to stay in a hotel and will want to find others place to live．As is true in cities anywhere in the world，the farther you live outside the city，generally the low the rents will be．However，travel to and from the city by bus，car or train may make it as expensive as living in the city．Naturally，it is easier to join in the life of a city if one is close to the center．By this reason，you may prefer to live as close to the center of the city as possible．But you may prefer to rent a place for only a month or two until you become more familiar to the area．Your best source of informations about houses is likely to be the local newspaper．Usually，the week's most completelylisting of houses to rent appears in the Sunday newspaper．

17．Among all the fast growing science and technology，the research of human genes（61）orbiological engineering as people call it，is drawing more and more attention now．sometimes it is a hot topic（62）discussed（discuss） by people．
The greatest thing that gene technology can do is to cure serious diseases that doctors at present can almost do nothing with，such as canner and heart disease．Every year，millions of people are murdered by these two （63）killers（kill）．And to date，doctors have not found （64）aneffective way to cure them．But if the gene technology（65）is applied_（ apply ），not only these two disease can be cured completely，（66）bringing （bring ） happiness and more living days to the patients，but also the great of money people spend on curing their disease can be saved，so （67）it benefits the economy as well．In addition，human life span can be prolonged．
Gene technology can help people to give birth to more healthy and clever children．Some families，with the English imperial（皇室） family being a good example，have hereditary disease．This means their children will for sure have the family disease，（68）which is a great trouble for these families．In the past，doctors could do nothing about hereditary disease，（69）But gene technology can solve this problem （70）perfectly（ perfect ）．The scientist just needs to find the wrong gene and correct it，and a healthy child will be born．

16．（36）B
Most of us have one or a few bad habits that we'd like to get out of．But how do you do it？I have a few suggestions that have help you and people around me．Here are some tips that can help you to finally get out of that bad habit．
（37）E．If you tell people around you that you will stop smoking or start to exercise three times a week，then they will check up on you．And you will feel you have to keep your promise because it is let out into the world．
Avoid temptations．（38）A．Places where you are likely to spend too much money．Things in your cupboard that will not help you to get healthier and you should not have at home at all．And people that drag（拉） you down and back into your old ways．
（39）G．It may seem like a good idea to change your life all at once．In our daily life，stress and lack of energy usually lead to failure．Don't try to be Superman or Wonder Woman．Take it easy and break one habit at a time．
（40）D．You will probably not succeed the first time you do it．You fail and you make mistakes when you make changes and try new things．That's just life an nothing to feel bad about．What should you do next is to try again．

A．Know what usually gets you into bad habits．
B．Simple tips for getting out of bad habits．
C．See your future in your mind．
D．If at first you don't succeed，please try again．
E．Tell your friends and family．
F．The reason why we need to make good habits．
G．Don't break more than one habit at a time．

15．An old gentleman who lives a few doors away from me can always be seen with a bag．He goes out by himself and picks up plastic bottles，plastic bags and pieces of paper everywhere．He does it all carefully and never complains．
The children in the nearby school are probably responsible for some of that litter（废弃物）．"There will come a time when they know better，"he said．"It's just not yet．So，I'll do it for them．"
Well，this morning I was out walking my neighbor's dog when I saw another neighbor，a much younger man，out doing the same thing!He had his two little sons with him and they were having good fun trying to pick up the litter．
When I commented on what a good job he was doing，he said，"Well，an older fellow in our street does this．And my friend and I thought it wasn't fair that he had to do it all the time，so now we take turns．"
Not only was he taking a turn，not only did he have a friend join in as well，but he was passing on the lesson to the next generation！
By the time I had returned the dog to my neighbor I looked again and his children's friends had joined in!
This man was teaching a whole group of young children to keep their own street sanitary．An older man had set an example for him and now he was passing it on-the next generation is doing what he did and the generation to come after that!

21．The old gentleman picks up the litterA．
A．to keep the environment clean．
B．to make money．
C．to set an example to children．
D．to help the cleaners．
22．The underlined word"sanitary"in the last paragraph can be replaced by"C"
A．polluted        B．crowded
C．clean          D．straight
23．What can we learn from the text？B
A．Two heads are better than one．
B．The power of example is endless
C．Like father，like son
D．No pains，no gains．

14．No sooner had the film star turned up than crowds of journalists began to interview her．
The film star hadhardly turned upwhen crowds of journalists began to interview her．

13．It is what he says that _______us thinking．（　　）

12．I was wondering how long _________you stayed at the party？（　　）

11．___________experiment took us five months and turned out _________ great disappointment．（　　）

10．Butterflies are some of the most fascinating and beautiful insects in the world．Adult butterflies will live about 2to 4weeks．They use their senses of sight，touch，hearing，smell，and taste to survive in the world，find food and mates，lay eggs in an appropriate place，migrate，and avoid hungry enemies．
Butterflies have large compound eyes（复眼），which allow them to see in all directions without turning their heads．Like most insects，butterflies are very nearsighted，so they are more attracted to a sea of flowers than individual plants．
Butterflies do not"see"colors such as red，green，and yellow，but they can sense sunlight，which indicates the direction the sun is shining，as well as ultraviolet light（紫外线），which is present on many flowers and guides butterflies to honey sources．
Butterflies have a very well-developed sense of smell，but it is not in their nose，since they don't have one．Sense receptors are located in their antennae（触角），feet，and many other parts of the body．They can help butterflies find their favorite flower honey food，and mates．
Butterflies'feet have sense organs that can taste the sugar in flower honey，letting the butterflies know if something is good to eat or not．Some females also carefully choose host plants by tasting to find appropriate places to lay their eggs．Adult butterflies feed their babies using a long tube．Butterflies force blood into the tube to straighten it out，allowing them to feed．Butterflies get all their food from this tube．
Butterflies don't have ears．Instead they"hear"sounds through their wings by sensing changes in sound vibrations（振动）．
Butterflies may possess senses we don't even know about yet，because their body structure is very different from ours，and therefore difficult to understand，when observed through our own human senses．

28．How do butterflies hear sounds？C
A．Using their feet to sense the vibration of things
B．Using their ears to listen directly
C．Using their wings to sense the sound vibrations
D．Using their antennae to judge the sound
29．Why do female adult butterflies carefully choose the host plants？B
A．To find high-qualified honey．
B．To find a proper place for their eggs．
C．To make it easier for them to hide from the enemies．
D．To have a good place for living．
30．The text mainly focuses onB．
A．butterflies'living habits
B．butterflies'senses
C．butterflies'daily activities
D．butterflies'beauty．

9．Welcome to the Kids'Science Challenge!
Do you like science projects and winning some awesome gifts？This is the challenge for you．What's even better is that you don't have to build anything-Simply come up with an original idea or design that relates to one of three topics given below．
Wonderful Sounds
Ready for Wonderful Sounds？Click on Science Secrets to meet our sound specialist．And be sure to download fun activities with crazy new sounds and musical instruments in the Dig In section!Now what kind of new musical instrument can you invent？
Super Material for Sports
Ready for Super Material for Sports？You'll discover the amazing world of Materials Science，where scientists and engineers develop new materials for everyday functions-like sports!Click on Science Secrets for information about our scientist．And don't forget to download the fun activities in the Dig In section!Now can you come up with a new sports material that would help you play your favorite sport？
Magical Microbes
Ready to discover Magical Microbes，the tiniest living things on earth？Click on Science Secrets for information about our scientists．And be sure to download all the fun activities in the Dig In section!Now can you think of a brand new way that microbes can help people？

24．Where can we most probably read the above passage？C
A．In a history textbook．
B．In a travel diary．
C．On a web page
D．In a city government report．
25．The Kids'Science Challenge may beA．
A．a competition for kids
B．a private unit of a school
C．an organization of a school
D．a social club for kids
26．Which topic will Tom probably choose if he shows interest in biology？C
A．Wonderful Sounds．
B．Super Material for Sports．
C．Magical Microbes．
D．All the three．
27．What's the purpose of the Kids'Science Challenge？D
A．To discourage kids'curiosity．
B．To challenge kids'ability．
C．To get kids join an activity．
D．To dig kids'creativity．

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