由新生儿到成人上颌骨的长度增加约A．3倍 B．以上全不对 C．3.5倍 D．2倍 E

假定英语课上老师要求同桌之间交换修改作文，请您修改你同桌写的以下作文。文中共有10处语文错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（），并在其下面写出该加的词。

删除：把多余的词用斜钱（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：

1. 每处错误及其修改均仅限一词；

2．只充许修改10处，多者（从第11处起）不计分。

Dear Diana,

Thank you for the lovely day we have with you. It was so kind tor you to let us bring Anne's friend. Gina. Unfortunate, the only problem was the journey home. There had been a terrible accident on the highway and, for a result, there was a long line of traffic for at least six mile. In the end, we drove to a service station and waited there unless the road was clear. In the car park Gina nearly got knocked over as a car drove out far too quickly from behind a lorry. They finally dropped Gina off at her parents' and made our own way to home.

填入一个适当的词补全对话，每空一词。

A: Hi, Li Yan! Have you ever been 1.             the local library before?

B: You mean the one near the Dragon Tower?

A: That's the one.

B: I go to the English Comer in the library every Saturday. A lot of English lovers practice spoken English

    together. Why 2.              you join us?

A: Sounds great! Could you tell me how to got there?

B: The No. 7 bus will take you right there.

A: How 3.              is it?

B: It's about twenty minutes' ride.

A: 4.              is the nearest bus stop?

B: Walk along the street, and take the first turning on the left. It's opposite the post office. You can't 5.           it.

A: Thanks a lot.

B: You're welcome.

如图所示，有一混合正离子束先后通过正交电场磁场区域Ⅰ和匀强磁场区域Ⅱ，如果这束正离子束在区域Ⅰ中不偏转，进入区域Ⅱ后偏转半径又相同，则说明这些正离子具有相同的（　　）

A．质量

B．速度

C．荷质比

D．电荷

系统分析的工作核心内容是（）

A.弄清用户要求，了解用户对信息系统的需求

B.彻底了解管理方法

C.尽量说服用户接受系统分析人员的意见

D.正确评价当前系统