问题 判断题

免疫球蛋白由两条轻链和两条重链组成,抗体与抗原的结合只涉及轻链,因为它有可变区域,重链的序列基本上都是恒定的,只起维持结构稳定的作用。 ( )

答案

参考答案:

完形填空

Today the world's economy is not going well. Crisis(危机)is to our life just like     to our body. Just as fatal(致命)disease can destroy our body and sometimes even put an    to our lives, so does crisis knock us down so hopelessly that we might never have chance of standing up again.Just take my own country for instance.Of course,in the   twenty years,our economy has gained the highest speed.But haven't we paid too much?Our rivers are    .Our natural resources are becoming  and fewer.Is it worthy of it?

Crisis sometimes contributes(贡献)to our life treasure in a way that few can imagine.It can make us strong enough to face ourselves when we feel weak.Eric,my uncle is an      . He had hard time in his    going through such a fatal disease that he had never thought he survive.     ,he was saved by doctors.Ever since then he regarded his life as a second given by God and has been so grateful to the world that he      his best to do what he could. And now he is living a      and successful life.

小题1:

A.ill

B.illness

C.sick

D.patient小题2:

A.end

B.finish

C.over

D.ending小题3:

A.last

B.next

C.past

D.during小题4:

A.pollution

B.polluted

C.polluting

D.pollute小题5:

A.1ess

B.few

C.little

D.fewer小题6:

A.example

B.case

C.such as

D.for example小题7:

A.childhood

B.child

C.children

D.child time小题8:

A.Luck

B.Lucky

C.Luckily

D.Luckly小题9:

A.try

B.do

C.tried

D.does小题10:

A.happy

B.happiness

C.pleased

D.pleasure

问答题 案例分析题