7．Rulers are everywhere．When you're reading at the library.playing basketball on the playground or d——青夏教育精英家教网—

7．Rulers are everywhere．When you're reading at the library，playing basketball on the playground or driving on the road，you'll have to follow some rules．But have you ever read any rules on a plane？If you're traveling by air in America，you may find the following criteria （标准）．
Exit Seat Criteria
If you are sitting in an exit seat，read the information below．
You must：
Be at least 15years old and healthy enough to offer help．Be able to speak，read and understand English well．
Be able to follow a safe way from the emergency exit （紧急出口）．Be able to help others away from the plane．
You must not：
Travel with a pet，such as a dog．
Travel with someone that needs special care，such as a child．
If you cannot meet the criteria，ask crew members （工作人员） to move you to another seat．You do not have to explain why，just say，"I do not want to sit in an exit seat．"
51．The passenger sitting in an exit seatC．
A．must be under 15B．needn't speak English
C．must be healthy enoughD．needn't help others
52．If you are sitting in an exit seat，you can NOTB．
A．explain the reasonB．bring a pet with you
C．read Exit Seat CriteriaD．move to another seat
53．This piece of Exit Seat Criteria may appearD．
A．on the playgroundB．on a trainC．on the roadD．on the plane．

1．C 2．D 3．E 4．A 5．B．

4．

1．E 2．D 3．B 4．H 5．C 6．F．

3．Hearing is very important to all of us．We can（56）Bbeautiful music，nice songs of birds，the laughter of people or other different kinds of（57）Ain the world with our ears．So we must try to protect our ears．The following will tell you（58）Cprotect ears．
    Listening to（59）Amusic a lot can be bad for ears，（60）Bwhen headphones （耳机） are used．So try not to wear headphones，or （61）Athe volume （音量） when you're wearing headphones．You should give your ears a rest if you like wearing headphones．
    Before swimming，remember （62）Bearplugs （耳塞） into your ears or wear a swim hat to stop water（63）Cinto your ears．
    If you are going to a concert，wear earplugs to protect your ears from the terrible music!（64）A，special earplugs can be made for you if you go to concerts a lot or if you are a musician yourself．
    See a doctor if your ears hurt．Take some medicine if the doctor asks you to do so．Follow the advice above now and you won't be saying"What"when you are getting （65）B．

56．A．listen	B．hear	C．hear of
57．A．sounds	B．noise	C．voices
58．A．how	B．what to	C．how to
59．A．loud	B．aloud	C．loudly
60．A．specially	B．especially	C．especial
61．A．turn off	B．turn down	C．turn up
62．A．put	B．to put	C．putting
63．A．to get	B．with getting	C．from getting
64．A．In fact	B．In general	C．In a word
65．A．young	B．old	C．tired．

2．

Pollute，live，stop，throw，not care

As we know，water is very important to man．We can't（81）livewithout water．The amount of water which is suitable to drink is less and less．But some people（82）don't careabout it．They waste a lot of water in their daily life．Even now，they pour dirty water into river．They（83）throwrubbish into rivers，too．Many rivers and lakes are seriously（84）polluted．Something must be done（85）to stopthe pollution．Only in this way can we live happily．If we don't save water，the last drop of water will be teardrop of us．

1．In North America，most students go to school on the school bus．Some students also walk or ride bikes to school．In other parts of the world，things are （61）different（不同的）．In Japan，most students take trains to school，although others also walk or ride their bikes．In China，it （62）depends （取决于） on where you are．In big （63）cities，such as Beijing，Shanghai，students usually ride bikes to school or take buses．And in places （64）wherethere are rivers and lakes，like Hongshanhu and Kaishandao，students usually go to school by boat．That must be a lot （65）more fun than taking a bus．

20．Juice is to drink as pork is toeat．

19．Lizzie-s diary from Antarctica （南极洲）
Day 3：Tuesday   December 2
We planned to go to Rothera that morning．We'd be staying there for the next two weeks．Because Antarctica is the windiest place on earth，sometimes you can't fly at all．
We had a nervous wait over breakfast to find out if we'd be leaving that day．People have to stay in Stanley for weeks while the pilots wait for good weather
It turned clear at 9：30and we took off at 10：30on a little red plane called a Dash-7．But even when we were in the air，there was still a chance we wouldn't be able to fly the whole day．
Day 4：Wednesday   December 3
After waking up in the Antarctic for the first time today I can understand why everybody who comes here falls in love with the place．It is really beautiful．
We're staying at Rothera Survey base with mountains of ice all around．It s about minus 2⁰C today，which for me is very cold，but the regulars（常客） here are often seen walking around in T-shirts!
Day 5：Thursday  December 4
I woke up to another beautiful sunny day here in the Antarctic．I'm told it's a bit colder today，about minus 5⁰C，but it's not very windy so it feels warmer．Those of us who are new to the bas have to do a spccial training course before we're allowed to go off base to other stations or to go snowboarding over the nearby hill．
Day 7：Saturday  December 6
Not a cloud in the sky and it's warm enough to sit outside （in a jacket）．
The most amazing thing about this place is how the scenery （凤景） changes every day．
At first I thought I was going mad．I'd step outside in the morning and think，"I'm sure that big mountain of ice wasn't there yesterday．"It's because the sea ice is always moving-slowly thankfully!
34．Lizzie sat outside wearing a jacket onD．
A．Tuesday
B．Wednesday
C．Thursday
D．Saturday
35．What could stop Lizzie from leaving Stanley for Rothera？A
A．Strong winds．
B．Thick clouds．
C．Mountains of ice．
D．Low temperatures．
36．How did Lizzie feel during her stay in the Antarctic？C
A．Afraid．
B．Nervous．
C．Amazed．
D．Bored．
37．What impressed Lizzie most about Rothera was thatD．
A．people walked around in T-shirts
B．there was a special training course
C．the weather was sometimes warm
D．the scenery changed every day．

18．Do you have brown hair？Are you taller than other kids your age？These characteristics were decided before you were born．You got your traits from your parents．They passed their traits on to you through genes （基因）．
Genes carry codes （代码） for blue eyes or brown eyes．Genes say how tall you will get and what color hair you will have．You got half of your genes from your mother．You got half of your genes from your father．So you have your own set of genes．Each person gets different genes for each body part．That is why you look like but not exactly like your brother or sister．
A dominant （显性的）  gene shows up most of the time．Brown eyes are dominant over blue eyes．A recessive （隐性的）  gene shows up less often．Light hair comes from a recessive gene．Dark hair is more common．Look at the eye color and hair color of the people around you．You will see that this is true．
Genes help to make you who you are．But they don't tell the whole story．Your genes may help you to be fast and strong．But you still need to learn how to run or swim or skate well．
31．The underlined word"traits"in Paragraph 1meansA．
A．charactcristics
B．expericnces
C．achievements
D．possibilities
32．According to Paragraph 3，you can see most of the people around you haveA．
A．brown eyes with dark hair
B．brown eyes with light hair
C．blue eyes with dark hair
D．blue eyes with light hair
33．What is the passage mainly about？B
A．Genes carry codes for eyes and hair．
B．Genes help to make you who you are．
C．Genes help you to be fast and strong．
D．Genes make brothers look similar．

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