______there is little we can do to modify the weather, we can at least know what kind of weather to expect.

A. Since      B. When         C. While         D. Unless

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：閱讀理解

A Concussion（腦震蕩） happens when the brain is shaken, often in a car crash or a fall or a strike on; the head in sports．Concussions can be mild, but doctors may order a CT scan to look for a more serious injury．But a recent study warned that more children than necessary are being exposed（使遭受） to radiation this way．

A national team led by two doctors at the University of California, Davis, studied hospital records from thousands of children with head injuries. They found that in many cases, the risk of developing cancer from the radiation outweighed the risk of a serious brain injury.

The study found that one in five children over age two had a low risk of serious injury but received CT scans anyway. The same was true of almost one in four children under two years of age.

The researchers have developed rules to predict if a head injury is serious enough for a scan. For children under two, doctors are advised against it if there is:

·Normal mental activity.

·No swelling in the back of the head.

·No feeling of a broken bone in the skull. (頭骨)

·And no loss of consciousness for more than five seconds.

Doctors should also consider how the child was injured and whether the parents say the child is acting normally.

For patients from two to eighteen, the guidelines are similar —— except there should be no l vomiting（嘔吐）and no severe headache.

Earlier this year, the British Journal of Sports Medicine published new guidelines for concussions in children and teens. International experts said they should not return to sports or school until fully recovered. The brain also needs a "cognitive rest," they say, by restricting activities like video games, texting and watching TV.

It often take longer than adults to recover from a concussion than adults. The experts say individual progress and not a set time period should always guide a decision to return to play.

The researchers at the -University of California found that children who received CT scans

       A．were likely to suffer brain injuries 

       B．wouldn't have normal mental activity

       C．would lose consciousness now and then 

       D．were likely to develop canter

How many aspects should doctors consider when deciding whether a child under two needs a CT scan?      

       A．Four．     B．Six．       C．Seven．   D．Nine．

What can we learn from the last two paragraphs?

       A．Texting is harmful to patients’ recovery from concussions．

       B．Patients with brain injuries can play many sports．

       C．Adults need a longer time than teens to recover from concussions．

       D．It takes at least a year for individuals with brain injuries to fully recover．

The author of the passage mainly___．

       A．describes the risks of brain injuries

       B．suggests CT scans are of practical use

       C．tells us about the risks of brain injury tests

       D．a(chǎn)rgues against new guidelines for concussions

查看答案和解析>>

科目：高中英語 來源：2011-2012學(xué)年黑龍江省大慶鐵人中學(xué)高二下學(xué)期期末考試英語試卷（帶解析） 題型：閱讀理解

Even if you are an experienced backpacker or climber，you need to know what to do if something goes wrong．It is not that Alaska is that much more dangerous than other places．It is no more hazardous than elsewhere，as long as the proper precautions(預(yù)防措施)are taken．So, being prepared is crucial to ensure a safe trip．
First of all，make sure you pack everything you will need for your trip．Even if you are traveling by car，pack clothes and gear for backpacking．Because of the bad weather, cars break down frequently. Pack a survival(生存)kit full with：a down coat, boots ,mittens, a hat, snow-pants，sleeping bags，candles，a flashlight，and high-energy food. If you are traveling by car , also pack extra belts, a shovel, and a chain.
If you are camping or hiking，make sure you know how to avoid bears．If you are lost in the wilderness, there is no doubt you will encounter them.
However，there is no need to be nervous．Just take these precautions：make noise as you walk，bears will avoid you；cook your food away from where you sleep，and store your food away from where you sleep，so the bears are not attracted．Both of these should keep the bear away．However，if you do encounter a bear，there are two different schools of thought．One is to make noise and scare the bear away．The other is to stand still and speak softly to get the bear to leave．If you are dealing with a brown bear，you can climb a tree，since it cannot follow．But，black bears can climb．If for some reason the bear attacks，play dead．Try to protect your head and neck，and hopefully the bear will leave its“dead” prey.
【小題1】The underlined word “hazardous” in Paragraph l most probably means________．

A．interestingB．dangerousC．wonderfulD．important
【小題2】The author seems to tell us in Paragraph 2 that________．
A．it is more dangerous to travel by car
B．the weather is always bad while traveling
C．it is necessary to take whatever you need
D．the car breaks down often while traveling
【小題3】Yon should prepare your food away from where you sleep so that________．
A．the bear can’t find you by the smell of the food
B．you can have a better sleep at night
C．the bear can’t find out your food easily
D．you can protect the food you bring with you
【小題4】All the following can most probably protect you EXCEPT that________．
A．you can try to make noise as possible as you can
B．you can say something in a soft voice to the bear
C．you can try to learn to climb up a tall tree nearby
D．you can pretend to be dead when you are in danger
【小題5】Which of the following is the main idea of this passage?
A．There are some tips to survive in Alaska’s wilderness．
B． The bears in Alaska’s wilderness are very dangerous．
C．Something should be taken along while traveling by car．
D．You should learn how to protect yourself．

查看答案和解析>>

科目：高中英語 來源：2010—2011學(xué)年新疆烏魯木齊市第八中學(xué)高二上學(xué)期第一次月考英語卷 題型：閱讀理解

Do you want to improve the way you study? Do you feel nervous before a test? Many students say that a lack of concentration (注意力) is their biggest problem. It seriously affects their ability to study, so do their test results.
If so, use these tips to help you.
Study Techniques
l You should always study in the same place. You shouldn’t sit in a position that you use for another purpose. For example, when you sit on a sofa to study, your brain will think it is time to relax. Don’t watch TV while you are studying. Experts warn that your concentration may be reduced by 50 percent if you attempt to study in this way. Always try to have a white wall in front of you, so there is nothing to distract (make less concentrated) you. Before sitting down to study, gather together all the equipment you need. Apart from your textbooks, pens, pencils and knives, make sure you have a dictionary. If your study desk or table is needed when you are not studying, store all your equipment in a box beside it.
l Your eyes will become tired if you try to read a text which is on a flat surface. Position your book at an angle of 30 degrees.
l Be realistic and don’t try to complete too much in one study period. Finish one thing before beginning another. If you need a break, get up and walk around for a few minutes, but try not to telephone a friend or have something to eat.
Test-taking Skills
l All your hard work will be for nothing if you are too nervous to take your test. Getting plenty of
rest is very important. This means do not study all night before your test! It is a better idea to have a long-term study plan. Try to make a timetable for your study which lasts for a few months.
l Exercise is a great way to reduce pressure. Doing some form of exercise every day will also
improve your concentration. Eat healthy food too.
l When you arrive in the examination room, find your seat and sit down. Breathe slowly and
deeply. Check the time on the clock during the test, but not too often. Above all, take no notice of everyone else and give the test paper your undivided attention.
【小題1】Which of the following statements is true according to the passage?

A．You should study in a different place every day, so you don’t get bored.
B．Your concentration will improve if you study and watch TV at the same time.
C．Check the time during the exam at a certain time.
D．Staying up all night and studying is tiring, but you will learn a lot using this method.
【小題2】What does the underlined word “it”（paragraph 2）refer to?
A．Your study desk or table.B．Your textbook.
C．Your dictionary.D．The equipment you need.
【小題3】What can be inferred from the passage?
A．You shouldn’t look at everyone else during the test.
B．You will have enough energy to deal with your study and exams by eating healthy diet.
C．You’ll concentrate more if there is nothing to distract you.
D．If you feel tired during study, you can walk around for a few minutes.

查看答案和解析>>

科目：高中英語 來源：廣東省2010屆高三下學(xué)期第三次階段性考試試題（英語） 題型：書面表達(dá)

第二節(jié) 讀寫任務(wù)(共l小題，滿分25分)

閱讀下面的短文，然后按照要求寫一篇150詞左右的英語短文。

The use of advertisement is certainly great both to the producer and the consumer. There is a great deal of truth in the saying that good quality and honest workmanship are best advertisement. Of course, people know that the manufacturers would have done better if they have used the money for advertising in making better products to sell. But in these days of far-extended trade, there is no doubt that advertisement is necessary to make the existence of even first-class goods known. And even goods that are already well known must still be advertised. Some manufacturers are aware of the value of it, for, when they try to save money by stopping their advertisements, their sales go down at once.

But advertising has its abuses. Many advertisements are meant to cheat, and do at times cheat the public by raising the price of worthless goods. There is only one comfort in this aspect that a lying advertisement cannot sell worthless goods for long, for the people who buy it will not buy it a second time. As an old saying goes, “You can take in all people part of time; and you can take in some people all the time; but you cannot take in all the people all the time.

[寫作內(nèi)容]

1. 概括短文的內(nèi)容要點(diǎn),該部分的詞數(shù)約為30;

2．就 “廣告的好與不好” 發(fā)表你的看法,寫一篇字?jǐn)?shù)約為120的文章，并包括

以下要點(diǎn)：

廣告對消費(fèi)者和商家的作用；

廣告到處可見，是一個(gè)大的產(chǎn)業(yè)；

但有時(shí)商家會以虛假夸大的廣告獲取利益而損害消費(fèi)者的利益；

你個(gè)人的觀點(diǎn)。

[寫作要求]

1）文章可參照閱讀材料的內(nèi)容，但不得直接引用原文中的句子; 2）題目自定。

[評分標(biāo)準(zhǔn)] 概括準(zhǔn)確，語言規(guī)范，內(nèi)容合適，篇章連貫。

      

查看答案和解析>>

科目：高中英語 來源：20102011年浙江杭州十四中高二下學(xué)期期中考試英語試題 題型：其他題

填空（共10小題，每小題1分，共10分）：

閱讀下面的短文，在標(biāo)有序號的空白處填入一個(gè)適當(dāng)?shù)脑~，或填入括號中單詞的正確形式，并將序號及相應(yīng)答案寫在答題紙上。

Around the world young people are spending unbelievable sums of money to listen to rock music. Forbes Magazine claims that at least fifty rock stars have an __1__ of between two million and six million dollars per year.

Some observers think the customers are buying more than music. According to one theory, rock music has a special appeal because no real training is needed to produce it. There is __2__ gap between the audience and the performers. Every boy and girl in the audience thinks,” I could sing __3__ that.” So rock has become a new kind of religion, a new form of worship. Young people are glad to worship a rock star because it is a way of worshipping __4__.

Luck is a key word for explaining the success of many. In 1972 one of the luckiest was Don McLean, who wrote and sang “American Pie”. Like most performers, McLean __5__ his own music, so he earns additional money. Records provide only part of a star’s income. Around the world young listeners soon want to see the star in movies, on television, and __6__ person.

__7__ do the rock stars use their money? What do they do when the money starts pouring in like water? Most of the young stars just throw the money around. England’s Elton John bought himself a $5,000 pair of eyeglasses that light up and spell E-L-T-O-N. He also bought himself __8__ cars, “one for each foot”.

In the end the rock star’s life is unrewarding. After two or three years fame and fortune are gone. __9__(leave) with his memories and his tax problems, the lonely ex-performer spends his __10__ (remain) years trying to impress strangers. New stars have arrived to take his place.

 

查看答案和解析>>

同步練習(xí)冊答案