伦理委员会应依据实验动物福利伦理审查的基本原则，兼顾动物福利和动物实验者利益，在综合

将太阳光通过三棱镜后，用一个白屏来承接，在白屏上形成一条红、橙、黄、绿、蓝、     （填一种色光的颜色）、紫的彩色光带，这个现象称为光的色散，其中           三种色光称为光的三原色；用白屏来承接是因为它能      （填“反射”或“吸收”）所有颜色的光。

刚体的平面运动

首席审计执行官揭示了一项明显涉及常务副总经理的重大舞弊活动，而首席审计执行官要向其提交报告。首席审计执行官最好采取以下哪项措施

A．开展调查，确定副总经理是否参与舞弊活动。
B．与副总经理面谈以获得实质性的证据。
C．告知管制机构和公安部门。
D．将事实报告给首席执行官和审计委员会。

Computer programmer David Jones earns ￡35,000 a year designing new computer games, yet he cannot find a bank prepared to let him have a check card. Instead, he has been told to wait another two years, until he is 18.

The 16-year-old works for a small firm in Liverpool, where the problem of most young people of his age is finding a job. David’s firm releases two new games for the expanding home computer market each month.

But David’s biggest headache is what to do with his money. Despite his salary, earned by inventing new programs within fight schedules, with bonus payments and profit-sharing, he cannot drive a car, take out a mortgage, or obtain credit cards.

He lives with his parents in their council house in Liverpool, where his father is a bus driver. His company has to pay ￡150 a month in taxi fares to get him the five miles to work and back every day because David cannot drive.

David got his job with the Liverpool-based company four months ago, a year after leaving school with six O-levels and working for a time in a computer shop. "I got the job because the people who run the firm knew I had already written some programs," he said. "I suppose ￡35,000 sounds a lot but actually that’s being pessimistic. I hope it will come to more than that this year." He spends some of his money on records and clothes, and gives his mother ￡20 a week. But most of his spare time is spent working.

"Unfortunately, computing was not part of our studies at school," he said. "But I had been studying it in books and magazines for four years in my spare time. I knew what I wanted to do and never considered staying on at school. Most people in this business are fairly young, anyway." David added, "I would like to earn a million and I suppose early retirement is a possibility. You never know when the market might disappear.\

Why does David think he might retire early()

A. You have to be young to write computer programs.

B. He wants to stop working when he is a millionaire.

C. He thinks computer games might not always sell so well.

D. He thinks his firm might go bankrupt.

我们把对物体距离、形状、大小、方位等特性的知觉，称为（）

A.后像

B.运动知觉

C.时间知觉

D.空间知觉

E.错觉