The doctor stressed theimportance of regular exercise．题目和参考答案——青夏教育精英家教网—

题目内容

13．The doctor stressed theimportance of regular exercise．（important）

分析医生强调了定期锻炼的重要性．

解答答案是 importance．本题考查在语境中选用所给词的适当形式．题干中the 后面需要的是名词，important形容词，重要的；importance名词，重要（性）；故答案是importance．

点评本题是要求用所给词的适当形式填空，解题时首先根据句子的结构考虑句中需要的词性；其次，关注所选词的形式的变化：如果是谓语动词关注时态、语态和数的变化；如果是非谓语动词要联系非谓语的基本用法判断非谓语的形式．如果是名词关注单数和复数的选用等．

练习册系列答案

4．Their goal is to ensure all groups are treated on an equalbasis（基础）．

1．Farmers use different kinds of soil conservation methods to protect their land from damage by farming and the forces of nature．One important form of soil conservation is the use of windbreaks．
Windbreaks are barriers formed by trees and other plants with many leaves．Farmers plant them in lines around their fields．Windbreaks stop the wind from blowing soil away．They also keep the wind from destroying or damaging crops．They are very important for growing grains，such as wheat．
There have been studies done on windbreaks in parts of West Africa．It is found that grain harvests can be 20% higher in fields protected by windbreaks compared to fields without such protection．
However，windbreaks seem to work best when they allow a little wind to pass through．If the wall of trees and plants stops wind completely，then violent air movements will take place close to the ground．These movements will lift soil into the air where it will be blown away．For this reason，a windbreak is best if it has only 60% to 80% of the trees and plants needed to form a solid line．
An easy role to remember is that windbreaks can protect areas up to ten times the height of the tallest trees in the windbreaks．There should be at least two lines in each windbreak．One line should be large trees．The second line，right next to it，can be shorter trees and other plants with leaves．Locally grown trees and plants are best for windbreaks．
Windbreaks can protect land and crops from the wind．They can also provide wood products．These include wood for fuel and longer pieces for making fences．

24．If the wind is stopped completely，what will happen？A
A．Some soil will be blown away．
B．The wind will become stronger．
C．Some trees will be pulled up．
D．All the wind will be kept out．
25．If the trees in the windbreak are 20meters high，the area being protected isB．
A.20meters           B.200meters
C.2，000meters       D.2meters
26．We can learn from the text thatC．
A．windbreaks are popular in Africa
B．only trees can be planted in a windbreak
C．windbreaks help to produce better harvests
D．the best way to protect soil is building windbreaks
27．The author develops the passage by the following means EXCEPTD．
A．making comparison              B．listing statistics
C．giving examples                D．following time order．

8．She resigned on a matter ofprinciple．（原则）

18．The mean boss asked us to finish the workimmediately（立刻地）．

5．______ the job well，you'd better ask Mr Wang for help．（　　）

2．Scientists have found that heavy drinking can cause _______ brain damage in teenagers，which may never recover．（　　）

16．It reallyannoys（使…生气）me when people make noise in the reading room．

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