哪一项不是肺炎的病因分类A．病毒性肺炎 B．细菌性肺炎 C．衣原体肺炎 D．真菌性肺

完成图并回答问题．

（1）把图中精子、卵细胞、受精卵的染色体补全．

（2）图中的“”代表______，A和a代表______．

（3）在形成精子（或卵细胞）过程中，体细胞内每对性染色体中的______条进入精子（或卵细胞）中．

（4）受精卵的基因型是______．

Looking for a children’s book? Internet users can find hundreds of them. These books are from around the world. And they are free to readers. The United States has started a project called the International Children’s Digital Library. It is supported by the National Science Foundation, the Library of Congress and the institute of Museum and Library Services.

The goal of the project is to offer more than 10,000 children’s electronic books in at least 100 languages. Some of the books show the similarities and differences in ways of life around the world. They will enable children to have a better understanding of other people’s cultures. People working for this project have tried to design easy ways to search the collection and read the books. A picture of each page appears on the computer. Users can also print the pages on paper if they want to.

The project is for two main groups of users. The first group is children between the ages of three and thirteen, along with their teachers and parents. The second group is researchers of children’s literature（文学）. The books can help children understand more about the world.

小题1:The books in the project can make children better understand ________.

A．other people’s cultures

B．their own culture

C．their teachers and parents

D．researchers of children’s literature小题2:In this project, the electronic books are ________.

A. expensive to readers                 B. from the U.S.A.

C. in different languages               D. for children only

小题3:The underlined word “goal” probably means ________ in the passage.

A．山羊

B．煤炭

C．进球得分

D．目标小题4:The third paragraph is mainly about ________.

A．the purpose of the project

B．the users of the project

C．people working for the project

D．museums and libraries

—Can you play ________ basketball?

—Yes, I can.[ ]

A. the

B. an

C. a     

D. /

( )是指公司将自身所有营销资源都集中于某一营销组合，满足整体市场中某一保险消费群体的产品及服务需求。这种策略比较适合于资源有限的情况，企业放弃对整体市场的全面开发，而是集中精力拓展一个或几个亚市场的较大份额。

A．无差异营销

B．差异性营销

C．集中性营销

D．分散营销

下列可以将两个三维实心体编辑成一个实心体的选项有（）。

A、UNI

B、SU

C、IN

D、SL