关于杂交瘤细胞的不正确叙述是[ ] A.有双亲细胞的遗传物质 B.不能无限增殖

题型:选择题

问题:

关于杂交瘤细胞的不正确叙述是[ ]

A.有双亲细胞的遗传物质

B.不能无限增殖

C.可分泌特异性抗体

D.体外培养条件下可大量增殖

考点:单克隆抗体
题型:选择题

To Our Readers (读者)
Welcome to the New Century. We have changed many parts of our New Century. Photos are bigger. So you can enjoy the beautiful flowers and clothes better than before. There is more sports news. So you can know more information about sports. There is also a new column (栏目) of English learning and teaching. We are sure it will help you to learn and teach English better. We believe you will find it more intere sting when you read it.
In the six years since its founding (成立) in 1994, New Century has become the best English language newspaper (报纸) in our province. Here we want to give our thanks to Mr. Johnson for his help in the past years.

The reader can post a letter to the newspaper.
A. Right.B. Wrong. C. Doesn’t say.

As you know, we have tried our best to develop a modern English language newspaper in our province. We’ve done well. We believe we can do better in the future. We hope you will find our New Century even more interesting. Please write to us and let us know what you think of it. We welcome your suggestions.

题型:选择题
已知a,b,c分别为△ABC三个内角A,B,C的对边,acosC+
3
asinC-b-c=0

(1)求A;
(2)若边b,c是方程x2-2
3
x+2=0
的两根,求边a的长及△ABC的面积.
题型:选择题

美国学者西奥多。莱维特指出,新的竞争不是发生在各个公司的工厂生产什么产品,而是发生在其产品能提供的()中。

A.质量水平

B.包装

C.形象

D.附加利益

题型:选择题

I think it's never too ______ to change bad habits.    [ ]

A. late    

B. lately    

C. latte

题型:选择题

根据我国交通政策,在特大城市中应发展:

A.私人小汽车

B.自行车

C.地铁

D.快速轨道交通

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