北京以外清朝最重要的皇帝行宫是（）。康熙以后，这里也是清朝的第二个政治中心，是清前期

蒙古民歌的音乐有着不同的演唱形式，但大体可分为（）。

患者，男性，因深昏迷而急诊住院。有肝硬化腹水14年，最近连续3次血氨检察均正常。您认为用哪一种药物治疗较适宜()

A．精氨酸

B．左旋多巴

C．谷氨酸钾或谷氨酸钠

D．肝脑清

E．乙酰谷氨酰胺

Do you want to live a happier, less stressful (有压力的) life?

Try laughing for no reason at all. That’s how thousands of people start their day at Laughter Clubs around the world – and many doctors now think that having a good laugh might be one of the best ways to stay healthy.

The first Laughter Club was started in Mumbai, India, in 1995 by Dr Madan Kataria. “Young children laugh about 300 times a day. Adults laugh between 7 and 15 times a day,” says Dr Kataria. “Everyone’s naturally good at laughing – it’s the universal language. We want people to feel happy with their lives.” There are now more than 500 Laughter Clubs in India and over 1,300 worldwide.

Many doctors are also interested in the effects (效果) of laughter on our health. According to a 5 – year study in the body. Laughter improves our health against illness by about 40%.

So, what happens at a Laughter Club? I went along to my nearest club in South London to find out. I was quite nervous at the beginning of the class, to be honest – I wasn’t interested in laughing with a group of strangers, and I was worried about looking stupid. Our laughter teacher told us to clap our hands and say “ho ho ho, ha ha ha,” while looking at each other. However, our bodies can’t tell the difference between fake laughter and real laughter, so they still produce the same healthy effects.

Surprisingly, it works! After ten minutes everybody in the room was laughing for real – and some people just couldn’t stop! At the end of the class I was surprised by how relaxed and comfortable I felt. So if you’re under stress, then start laughing. You might be very pleased with the results!

小题1:In which country was the first Laughter Club started?

A．Britain.

B．America.

C．Australia.

D．India.小题2:How did the writer feel at the beginning of the class?

A．Surprised.

B．Pleased.

C．Nervous.

D．Stressful.小题3:When did the people in the club begin to laugh for real?

A．After a few minutes.

B．After a few hours.

C．After a few seconds.

D．After a few days.小题4:Which of the following is true according to the passage?

A．Fake laughter and real laughter are both good for health.

B．40% of the people in Laughter Clubs are good friends.

C．Adults laugh more often than children in a day.

D．Laughing is the best way to prevent illness.

贴片机的贴片精度包括（）。

A.贴装精度

B.贴片率

C.分辨率

D.重复精度

论述医政管理的原则。