下列哪种方法可以区分EBV和CMV所致的单核细胞增多症A．查EB病毒的EA抗体 B．

综合填空

     An old woman (1)o______ her window and looks out of it. The sun shines (2)b______. There's a man

in the (3)g______ in front of her house. The old woman says in surprise, "Oh! He is eating (4)g______!"

She goes (5)o______ and asks the man, "Why are you eating grass? Are you (6)h______?" The man

says, "Yes, I am very poor. I have (7)n______ for my breakfast today and ..." The old woman tells him

to go to the (8)b______ door of her house, and she goes in again.The man (9)s______ and  goes to the

back door of the house. Then the old woman opens the door and says to the man, "The grass here is

(10)l______."

18世纪末，英法等西方殖民者加紧侵略埃及，原因包括(　　)

①埃及的战略位置十分重要　②埃及拥有丰富的自然资源

③埃及社会动荡，国力衰弱　④马木路克同侵略者相互勾结

A．①②③

B．②③④

C．①②④

D．①③④

你知道下面的几幅漫画（如图所示）分别属于哪种利用吗？

（1）属于利用声音传播信息的有________（只填序号）．

（2）属于利用声音传递能量的有________（只填序号）．

细胞融合可以在基因型相同的细胞间进行，也可以在基因型不同的种内细胞间进行，但是不能在种间细胞间进行。

消毒使用的紫外线是C波紫外线，其波长范围是200nm～275nm，杀菌作用最强的波段是

A．200nm～240nm

B．230nm～270nm

C．250nm～260nm

D．250nm～270nm

E．230nm～260nm，