题目内容
8．A bad eating habit will not kill people at once．It can，________，cause many diseases．（ ）| A． | because | B． | so | C． | however |
分析 不好的饮食习惯不会立刻置人于死地，然而，它会引起许多疾病．
解答 答案：C．
首先明确选项中每个单词或短语的意思，A：因为；B：所以；C：然而；根据题干结合推测设空处句子的句意是"不好的饮食习惯不会立刻置人于死地，然而，它会引起许多疾病．"，前后是转折关系，由此判断句子中缺少"however"一词，故答案为C．
点评 了解每个选项的含义是做好此类题型的关键，还要从句意着手，根据句意作出解答；所以，平时的学习中要多进行积累词汇，才能很好的完成．
练习册系列答案
相关题目
13．_____my aunt lives in Shenzhen，I′ve never been three．（ ）
| A． | Because | B． | Although | C． | Unless | D． | Before |
19．
When our cousins came to visited us，we decided to go for a picnic at our favorite picnic place．
My mother is a wonderful cook．（61）D There were other boxes and bags too．There were picnic things，swimming things，towels，knives，cups，glasses，drinks，sunshades，mats，folding chairs，and a big cardboard box full of rubbish．I threw the box into the big rubbish bin in the street，and we put everything else in our car．
After driving for an hour on the big road，we came to a small road and then to a track（小道） over dry rocky ground．（62）A It is a beautiful river and always full of clean，clear water from the mountains．There are waterfalls（瀑布） and places for swimming．There are little beaches with palm trees，and there are islands and big rocks．（63）E
Then everyone was hungry．We unpacked the car and put up the sunshades．
But the food wasn't there!（64）BEveryone looked at me．I said，"I think I threw away the wrong box．Sorry!"
You can imagine what everyone said!
In the end，we ate the biscuits，and we all had a lovely day at the river，but I was not the most popular person that day．
| A．It was a long，hot and dusty drive，but finally we saw the river． B．There was a big box of rubbish，but no food，except for some bread and biscuits． C．Everyone sang and danced happily． D．She made everyone's favorite things and she packed all the food in a big cardboard box． E．We jumped and dived from the rocks into the cool water． |
My mother is a wonderful cook．（61）D There were other boxes and bags too．There were picnic things，swimming things，towels，knives，cups，glasses，drinks，sunshades，mats，folding chairs，and a big cardboard box full of rubbish．I threw the box into the big rubbish bin in the street，and we put everything else in our car．
After driving for an hour on the big road，we came to a small road and then to a track（小道） over dry rocky ground．（62）A It is a beautiful river and always full of clean，clear water from the mountains．There are waterfalls（瀑布） and places for swimming．There are little beaches with palm trees，and there are islands and big rocks．（63）E
Then everyone was hungry．We unpacked the car and put up the sunshades．
But the food wasn't there!（64）BEveryone looked at me．I said，"I think I threw away the wrong box．Sorry!"
You can imagine what everyone said!
In the end，we ate the biscuits，and we all had a lovely day at the river，but I was not the most popular person that day．
3．Hundreds of years ago，life was harder than it is today．（68）C．There was no modern medicine，either．
Life today has brought new problems．One of the biggest is pollution．Water pollution has made our rivers and lakes dirty．（69）E．Noise pollution makes us talk louder and become angry more easily．Air pollution is the most serious kind of pollution to all living things in the world．Cars，planes and factories all pollute our air every day．Sometimes the polluted air is so thick that it is like a quilt （被状物） over a city．（70）B．
Many countries are making rules to fight pollution．Factories must now clean their water before it is thrown away，and they mustn't let dirty smoke go into the air．
We need to do many other things．We can put waste things in the dustbin and do not throw them on the ground．（71）D．If there are fewer people driving，there will be less pollution．
（72）A．Every person must help to fight pollution．
Life today has brought new problems．One of the biggest is pollution．Water pollution has made our rivers and lakes dirty．（69）E．Noise pollution makes us talk louder and become angry more easily．Air pollution is the most serious kind of pollution to all living things in the world．Cars，planes and factories all pollute our air every day．Sometimes the polluted air is so thick that it is like a quilt （被状物） over a city．（70）B．
Many countries are making rules to fight pollution．Factories must now clean their water before it is thrown away，and they mustn't let dirty smoke go into the air．
We need to do many other things．We can put waste things in the dustbin and do not throw them on the ground．（71）D．If there are fewer people driving，there will be less pollution．
（72）A．Every person must help to fight pollution．
| A．Rules are not enough． B．This kind of quilt is called smog． C．People didn't have modern machines． D．We can go to work by bus with our friends in the same car． E．It kills our fish and pollutes our drinking water． F．Smog is also a kind of pollution． |
18．The boy is often heard in the music room．He sings very well．（ ）
| A． | practise singing | B． | to practise singing | ||
| C． | practised singing |