只存在经营期和持有期的投资项目的是( )。A．管理房地产投资项目 B．房地产置业投

       刘爷爷是第一届中国人民政治协商会议的代表，他参与和表决了会议通过的所有文件和决定，下列各项属于这些文件和决定的是

①《中国人民政治协商会议共同纲领》②以五星红旗为国旗

③以《义勇军进行曲》为代国歌 ④建立人民英雄纪念碑 ⑤第一部《中华人民共和国宪法》[ ]

A、①②③

B、②③④⑤

C、②③⑤

D、①②③④

Mistakes are a part of life. To err is human. Failure is also a part of life, not the end of life. Be happy facing life’s challenges. When you make the effort to be happy and to improve your life, you are actually rewarded along the way.

Life is like a game and maybe you can award points for every effort that has been a success for you. Try it. Add ten points for every achievement. And when you have reached 50 points, just yell, “Hey, I’ve won!” and give yourself a reward. If you happen to have missed your points for whatever reason, tell yourself, “Well, I tried!” which is better than not trying at all. Don’t let it be said you didn’t try.

What is it that you want to make yourself happy? Actually happiness means different things to different people. For example, an athlete will be happy winning his first race. For a new mother happiness would be seeing her baby’s first steps. Happiness for a poor person would mean having a meal just for today. So happiness for you is really something simple that you want for yourself.

It really doesn’t have to be big. As a matter of fact, you should be always realistic(现实的). Make the best out of every given situation. If you expect a certain result from a situation and it does not happen, don’t get despondent. This just means trying harder next time. We all have in us the power to succeed. Don’t let “give up” be a part of your vocabulary.

小题1:By saying “To err is human”, the author means that____________.

A．human beings should try to avoid making mistakes

B．no one is perfect and everyone makes mistakes

C．mistakes and failures make up our life

D．human beings make mistakes easily小题2:What’s the main idea of Paragraph 2?

A．Try to reach 50 points.

B．Try to get as many points as you can.

C．Award yourself for your success

D．Don’t be afraid of missing your points.小题3:The author proves his idea in Paragraph 3 through____________.

A．examples

B．numbers

C．experiments

D．stories小题4:The underlined word “despondent” in the last paragraph means____________.

A．frightened

B．disappointed

C．surprised

D．excited

蒸汽温度调节共有几种方法？

BSP方法是（）识别企业目标。

A、自上而下

B、自下而上

C、自左而右

D、自右而左

从低等生物到高等生物，基因组大小呈现出（）趋势。

A.增大

B.不变

C.减小

D.不定