易进入脑脊液，适用于脑瘤的是 A．氮甲 B．巯嘌呤 C．塞替派 D．卡莫司汀 E．卡

（）是分析活动顺序、活动时间和资源要求，制定项目时间进度表。

A.活动定义

B.活动排序

C.估算持续时间

D.编制进度计划

阅读理解。

     It was graduation day at the university where I work and a beautiful day quite unlike the first

graduation I attended as a young professor. On that cold day years ago, as we watched the students

walking into the hall, one of my colleagues turned to me and said, "Graduation will be one of the happiest

and one of the saddest time of your life." At my inquiry, he answered, "Because the students you have

gotten to know have to leave."

     As years went by, my previous confusion about my colleague's words no longer existed. When I

came across naughty students, I have had to rethink why I chose to be a teacher. It obviously isn't the

money. Once a former computer science student of mine called me, asking me if I wanted to have a

change. He was working at Nintendo Corporation. His salary was higher than my current one, though

I have more education and have worked for over a decade. With my programming skills, he said he

could get me hired. I thanked him, but declined his kind offer.

     A few days before this current graduation, while working on final grades, I found a note a s student

had slipped in with her homework. She thanked me for being her teacher and said the things she had

learned in my class - not about math, but about life - would be things she would remember long after

the math skills had faded away.  As I finished reading, I remembered why I had become a teacher.

      Now, on this sunny graduation day, as I again observed the sea of blue hats and gowns, I did so

with renewed dedication and a deeper sense of satisfaction - I will always be grateful that I am a teacher.

1. Hearing his colleague's description for the first time, how did the author feel?

A. He quit agreed with his colleague.

B. He was very puzzled

C. He thought it very funny.

D. He was very sad.

2. What does the underlined part in the last paragraph refer to?

A. University colleagues.

B. Life memories.

C. Decorations in the hall.

D. Graduates' clothes.

3. The author wrote this passage to         .

A. express his devotion to being a teacher

B. compare two different graduation ceremonies

C. talk about the meaning of graduation

D. give advice on how to be a good teacher

在表单设计中，关键字Thisform表示( )。

A．当前对象的直接容器对象

B．当前对象所在的表单

C．当前对象

D．当前对象所在的表单集

违反《著作权法》同时损害社会公共利益的，著作权行政管理部门可以处以罚款的上限是非法经营额的（）倍。

A.1

B.2

C.3

D.4

什么是作物的土壤营养环境？