Because of the earth's gravity .apples fall to th ground．题目和参考答案——青夏教育精英家教网—

题目内容

18．Because of the earth's gravity （重力），apples fall to th ground．

分析由于地心引力，苹果落到地上．

解答 gravity考查名词．根据所给的汉语提示"重力"和空前的名词所有格the earth's可知，此处应用名词形式，故填gravity．

点评名词是中学英语的重要语法，解题时首先要根据语境和逻辑来推断出空所需要的词性，或者是根据句子结构的需要来推断词性，然后根据句意和所给的汉语提示选出答案．

练习册系列答案

9．We also give messages toinform the parents of events（通知父母一些事项） such as outings and school plays．

6．We are _________ an experienced and reliable producer of jewellery．（　　）

	A．	search for		B．	in search of
	C．	in our search of		D．	searched

13．Dear Mr．Black，
I'm very thank to you for inviting me to stay with you in the come summer vacation I have been dreamed of seeing you again so that I can get help from you in my English learning．And I'm afraid I cannot go to your place in this summer．I've promised my grandmother，she lives in the country，to spend this summer with her．She misses me too much that I find difficult to refuse her request．I'm busy preparing for my examinations in present．I planned to visit you in winter if it's convenient to you．
Best wishes．
Yours truly，
Li Ying．

3．我不知道他们怎么交这么低的税而未受到惩罚．
I don't know how they manage toget away with paying such low taxes．

10．One of the greatest benefits of Internet friendships is that they are based on common interests，________ appearance or age．（　　）

7．根据短文内容，从短文后的选项中选出能填入空白处的最佳选项．选项中有两项为多余选项．
It is very common for you to find yourself in an unfamiliar situation．（36）B Yes，everyone tells you to stand on your own two feet and take responsibility for your action，but if you haven't experienced a situation before，how can you know what to do？
We usually try our best to do everything on our own and not to rely on others，but at certain times calling for help is the best way forward．You can picture the scene of the man--it is usually a man--driving blindly around an unfamiliar town looking for an address he doesn't know．（37）D And he could get to his appointment on time．It is obvious to everybody in such a case that asking for help is not a sign of weakness，but rather the sensible thing to do．
（38）C For example，you are looking for a new job and need to write your resume（简历）．If your pride prevents you from getting help and you just do the writing yourself，it may well cost the opportunity you are seeking．Similarly，when you just started a new job，you often don't want to admit that you haven't got the knowledge to finish a particular task，so you keep going and eventually make things worse than they were．This may lead to a diminishing（贬低）of you in the eyes of the boss．（39）A
Now you can see that asking for help is not a sign of weakness but is the sensible and mature thing to do．（40）F Making your life easier by asking for and using knowledgeable help is not a sign of weakness，but is actually quite a clever thing to do．

A．What's worse，you are most likely to lose the new job．
B．Actually speaking，asking for help is not a sign of weakness．
C．There are times when you know you don't have the relevant experience．
D．If only he would stop and ask for directions，he could save lots of time．
E．However，many people tend to make mistakes over and over when help is available．
F．You will also recognize expert help would save your time，energy and money．
G．You can accustom yourself to asking for help sooner or later．

8．根据短文内容，从短文后的选项中选出能填入空白处的最佳选项．选项中有两项为多余选项．
Snowblind--it's a frightening word．Thankfully，it's a condition that is totally preventable．
Snow blindness is a painful，temporary loss of vision due to overexposure to the sun's UV rays．Essentially，snow blindness is caused by a sunburned eye．
（36）AThough it is commonly called snow blindness，the condition can （and often does） occur in the absence of snow．
The terms"snowblind"and"snow blindness"have become popular because snow is highly reflective of ultraviolet radiation．（37）E Also，skiing，mountain climbing and snowboarding usually take place at relatively high altitudes，where the sun's UV rays are stronger．Combined，these factors can double your risk of getting sunburned eyes，compared with being outdoors at lower altitudes in the summertime．
（38）GTelevision journalist Anderson Cooper experienced snow-free snow blindness first-hand a few years ago when he spent a couple hours on a boat in Portugal without sunglasses and ended up"blind for 36hours，"according to his report of the incident．
Not only can you become snowblind without snow--it can happen without sunlight，too!（39）DFor example，sun lamps can cause temporary"snow"blindness if proper eye protection is not used．
（40）FTo relieve pain or discomfort from snow blindness，stay indoors and wear sunglasses．Keep your eyes well-moistened with artificial tears．For additional relief，use over-the-counter pain relievers．Be sure to use only pain relievers you know you can take without worry of an allergic reaction．You also may find that placing a cool，dampened washcloth over your closed eyelids is comforting．

A．You don't need snow to become snowblind．
B．It will likely affect those traveling in snowy conditions．
C．To prevent snow blindness on the slopes，wear sunglasses．
D．Sometimes it occurs from man-made sources of ultraviolet radiation
E..In fact，snow can reflect over 80percent of the UV rays that fall upon it．
F．Snow blindness is scary，but usually it's temporary，and there are ways to relieve the discomfort．
G．But water and white sand also are highly reflective of the sun's UV rays，thus increasing the risk．

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