湿法制粒压片工艺的目的是改善药物的A．可压性和流动性 B．崩解性和溶出性 C．防潮性

阅读理解。

     Jean is a bright young woman who comes from a rich and famous family. She goes to a good university and has everything that money can buy. Well, almost everything. (1)The problem is that the people in

Jean’s family are so busy that they can hardly find time to be with her. In fact, Jean is quite lonely.

     So Jean spends a lot of time on her QQ. She likes being anonymous(匿名), talking to people who do

not know about her famous family and her rich life. She uses the name Linda on QQ and has made a

lot of friends who she keeps in touch with quite often.

     Last year Jean made a very special friend on QQ. His name was David and lived in San Francisco.

David was full of stories and jokes. He and Jean had a common interest in rock music and modern dance. ( 2) So it always took them hours to talk happily on QQ and sometimes they even forgot their time. Of

course, they wanted to know more about each other. David sent a picture of himself. He was a tall, good-

looking young man with a big, happy smile. As time went by, they became good friends and often sent

cards and small things to each other.

     When Jean’s father told her that he was going on a business trip to San Francisco, she asked him to

let her go with him so that she could give David a surprise for his birthday. She would take him the latest

DVD of their favorite rock singer. But when she knocked on David’s door in San Francisco, she found

that her special friend was a twelve-year-old boy named Jim! 

根据短文内容简要回答下列问题：

1. Why did Jean think David, his friend on QQ, was special?

____________________________________________________________________________

2. What will Jean’s QQ friend’s real name and age?

____________________________________________________________________________

将短文中划线的两个句子译成汉语。

3.____________________________________________________________________________

4.____________________________________________________________________________

请给短文拟一个适当的标题。

5. _________________________________________________________________________

某班针对如何建立一个优秀班集体展开了积极的讨论，提出了很多建议。你认为可采纳的意见有

①同学之间要友爱，互相帮助  

②有特点的同学要发挥自己的特长，没有特长的同学可以不为集体做贡献  

③制定班规，让大家共同遵守  

④集同学们的智慧和力量，促进班集体的发展

A．①②③④      

B．①②④      

C．①③④      

D．①②③

从蜜饯中分离到一株高渗酵母菌，其水活度αW值约为（）。

A、0.95

B、0.85

C、0.75

D、0.65

普通蜗杆传动的正确啮合条件是什么？