（1）
Though great progress has made in science these years， 76
there are still many people in poor conditions. They make their lives 77
by collecting and selling used thing .Their children cannot go to school 78
because they have no enough money to send their children to there． 79
Why you think so many people still suffer from poverty now? 80
The answer lies on the population explosion .A president 81
of a developing country once said：“It is us who are to blame for 82
the poverty and we used to produce children without limit” 83
Although this few words sound simple enough．they have 84
clear pointed out one of the causes of the population explosion， 85
【答案】
76. 正确 77. lives改为living 78. thing改为things 79. 去掉第二个to 80.why后加do 81. on改为in 82. us改为we 83. and改为because 84.this改为these 85. clear改为clearly
（2）
The problem of “white pollution” causes by used plastic 66.
is becoming increasingly serious，in that plastic shopping bags 67.
play a important role，In China about three billion plastic 68.
shopping bags are consumed every day，which results a great 69
waste of resources and heavy environmental pollution．Lucky， 70
the government has been put a nationwide ban on the use of 71
free plastic bags，demand that all stores and supermarkets not 72
provide customer with free plastic bags after June 1．The rule 73
has undoubtedly reduced the use of plastic bags．It is suggested that 74
we should turn to cloth bags and shopping baskets since now on． 75
【答案】
66.Causes改为caused 67.that改为which 68．a改为an 69.Results
70.Lucky改为Luckily 71.去掉been 72.demand改为demanding
73.customer改为customers 74. √ 75. since改为from
（3）
Wise men don’t always act as wise as we think．At times 76．
they maybe done something silly：Because we always think they 77．
are well known，so the stories about their foolish acts are still 78．
widely talked throughout the world in modern times．For example， 79．
Beethoven，the great composer of Austria was said to have insisted 80．
on paying a waiter in a restaurant for a dinner he has not eaten or 81．
ever ordered；the British physicist Newton，while lives in London， 82．
cut two holes in the two doors of his flat，one big，other small， 83．
so as for his two cats to pass through them．He only thought the 84．
bigger cat could not get through the smaller holes easily． 85．
【答案】
76．wise改为wisely 77．done改为do 78．去掉so 79．talked后加about 80．正确 81．has改为had 82．lived改为living 83．other前加the 84．去掉them 85．holes改为hole
（4）
Time is valuable but limit There’s a famous saying， 76．
“Time is life”，this shows the importance of time 77．
When time has gone，it will never return back． 78．
It is a pity when many people make poor use of time．They 79．
spend precious time oversleeping，drinking and hanging around 80．
They don’t realize wasting time is equal with wasting part of 81．
their life They always regret having made a little achievement 82．
so far．Therefore，we should learn from the habit of value time 83．
Do not put off what can be done today until tomorrow；Laziness 84．
will not only bring us failure，but also lead us on the road 85．
of poverty and even death
【答案】
76．1imited 77 which 78．去掉back 79 when改成that 80．加their 81．with改成to 82．去掉a 83．valuing 84．正确 85．on改成to