题目

下列我国古代科技成就，不属于东汉时期取得的是( ) A . 蔡伦改进造纸术 B . 祖冲之把圆周率数值计算小数点以后的第7位数字 C . 《九章算术》的出现 D . 张衡制成世界公认的最早的地震仪器——地动仪 答案：B阅读理解     Are you happy? Do you remember a time when you were happy? Are you seeking happiness today?     Many have sought a variety of sources for their feeling of happiness.Some have put their heart and efforts into their work.Too many turned to drugs and alcohol.Meanwhile, untold numbers have looked for it in the possession of expensive cars, exotic (异国的) vacation homes and other popular "toys". Most of their efforts have a root in one common fact: people are looking for a lasting source of happiness.     Unfortunately, I believe that happiness escapes from many people because they misunderstand the journey of finding it.I have heard many people say that, "I'll be happy when I get my new promotion." or "I'll be happy when I lose that extra 20 pounds." It is dangerous because it accepts that happiness is a "response" to having, being or doing something.     In life, we all experience stimulus (激励) and response.Today, some people think that an expensive car is a stimulus.Happiness is a response.A great paying job is a stimulus.Happiness is a response.This belief leaves us thinking and feeling, "I'll be happy when..."     It has been my finding that actually the opposite is true.I believe that happiness is a stimulus and response is what life brings to those who are truly happy.When we are happy, we tend to have more success in our work.When we are happy, we more naturally take better care of our bodies and enjoy good health.Happiness is not a response but a stimulus.     Happiness is a conscious choice we make in daily life.For unknown reasons to me, many choose to be upset and angry most of the time.Happiness is not something that happens to us after we get something we want-we usually get things we want after we choose to be happy.1. From the second paragraph, we know to many people ________.A. they are not happy when they work hard  B. they are not happy when they drink or take drugsC. they are happy when they possess their own expensive carsD. they all desire exotic vacation homes2. Generally speaking, most people feel happy because ________.A. they think happiness is rooted in their deep hearts    B. they get what they want to haveC. they get a great paying job                      D. they get an expensive car3. In the author's opinion, which of the following is the most important if you want to be happy?A. Losing weight.       B. An expensive car.      C. Success in work.     D. Feeling happy.4. Which of the following is TRUE according to the author?A. If you want to get what you want, you first choose to be happy.B. We should try to get more and then we'll be happy.C. Most people today are happy.D. Work is a necessary part in our daily life.5. From the viewpoint of the author, happiness is ________.A. based on our needs          B. unconditional      C. out of reach        D. limited