2．Seeing Tom in such funny clothes，I was unable to resist laughing(laugh)． 3．His parents tried to persuade him not to apply for the well-paid job，but their efforts were in vain.
4．We had our furniture moved to the new house when the decoration (decorate) of the house was finished.
5．Our parents send us to school so as to enable us to_obtain (obtain) knowledge and achieve great things in the future.
6．Only if we know what we do in our daily life and live a low-carbon life can we make a difference(differ)．
7．It's reported that there's a big breakthrough in the cancer treatment. 8．There is no doubt that cellphones have a negative impact on our lives. 9．(2018·济南质检)My father forbids (forbid) me to play computer games unless I finish all my homework.
10．(2018·东北三省四市联考)It is reasonable(reason) to forgive him.After all，he is only a child.
Ⅱ.单句改错
1．It suddenly struck to me that we ought to make a new plan.
去掉第一个to
2．No one knows exact how the earth began as it happened so long ago.
exact→exactly
3．There is some doubt whether the young man can undertake of such an important task.去掉of
4．There is a general belief which things will soon get better.which→that 5．The man couldn't resist show off his being hired by the big company.
show_→showing
6．Owe to his absence，we had to put off the class meeting till next week.
Owe→Owing
Ⅰ.课文语法填空
根据P11－12课文内容，在空白处填入1个适当的单词或括号内单词的正确形
11
式。
Cloning has always been with us and is here to stay.It is a way of 1.making(make) an exact copy of another animal or plant.It has two major uses.One is that gardeners use it to produce commercial 2.quantities(quantity) of plants.3.The other is that it is valuable for research on new plant species and for medical research on animals.However，the process of cloning is difficult 4.to_undertake(undertake)．
Many attempts to clone mammals failed.The breakthrough that scientists made in history is in the year 1996.The first successful cloning，Dolly the sheep，made the whole 5.scientific(science)world follow its process，though it had 6.more(many) problems than the normal sheep.On the other hand，Dolly's appearance 7.raised(raise) a storm of objections and had a great impact 8.on the media and public imagination.Different people have different 9.opinions(opinion) on it.However，scientists still wonder whether cloning will help 10.or harm us and where it is leading us.Maybe in the 21st century，cloning will be the biggest moral dilemma.
Ⅱ.写作改错双练
根据提示运用本单元所学知识完成下面小作文，并改正学生习作。 1．据我所知，人们对于克隆技术尤其是在克隆人方面分歧相当大。(differ) 2．一些人支持它的发展，他们认为这项技术一定会有利于医学的发展。(in favour of；be bound to)
3．相反，另一些人害怕克隆能引起一系列的道德问题，对社会的发展造成危害。(on the contrary)
4．我认为，只要所有的人都遵守规则，承诺合理应用克隆技术，克隆将会取得成功。(on assumption that)
第一步：练写作
用适当的连接词将上述句子连成一篇短文。
__________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ 第二步：练改错
12
下面是李明针对本文的习作，其中有5处语法错误，请你帮他纠正过来。 As far as I know，people differ greatly in cloning technique，especially cloning human beings.Some people are in favour of its development，believe the technique is bound to benefit the medical development.On the contrary，other find that it could raise a storm of moral problem，thus causing damage for the social development.However，in my opinion，cloning will pay off on the assumption that all people obey rules and promise to use it proper.
【答案】
As far as I know，people differ greatly in cloning technique，especially cloning believe
human beings.Some people are in favour of its development，believing the technique other
is bound to benefit the medical development.On the contrary，others find that it could problem
raise a storm of moral problems，thus
for
causing damage to the social development.However，in my opinion，cloning will pay off on the assumption that all people obey rules and promise to use it
proper
. properly
13
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