问题
单项选择题
中药性能的内容不包括：
A．形色
B．性味
C．升降浮沉
D．归经
E．毒性
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
中药性能的内容不包括：
A．形色
B．性味
C．升降浮沉
D．归经
E．毒性
参考答案：A
研究表明：一氧化氮吸入治疗法可快速改善SARS重症患者的缺氧状况，缓解病情。病毒学研究证实，一氧化氮对SARS病毒有直接抑制作用。下列对一氧化氮的叙述正确的是
| A．一氧化氮是一种红棕色的气体 | B．一氧化氮的摩尔质量为30 |
| C．常温常压下，一氧化氮能与空气中的氧气直接化合 | |
| D．一氧化氮易溶于水，不能用排水法收集 |
One day, Miss Ellis gave her pupils a new kind of homework: homework on happiness. Her pupils would be “happiness 1 ”, and were to see what would happen when they tried to bring happiness to those around them. As part of their homework, all the students did really 2 , wonderful things, but what Carla Chalmers did left everyone 3 . Several days after the homework had been handed out, Carla turned up carrying a big bag. “Here in this bag I have all the happiness I’ve collected so far,” she said 4 . On seeing this, everyone was filled with 5 , but Carla didn’t want to show anyone what was in the bag. Instead, she pulled out a small box and gave it to her teacher. When Miss Ellis had taken the box, Carla took a(n) 6 camera out of her own pocket and stood with it at the ready. “Open it, Miss Ellis.” The teacher slowly opened the box and looked inside. A big smile 7 on her face, and at that moment Carla took a photo, Carla’s photo came out of the camera immediately, and she 8 it to Miss Ellis along with a sheet of paper. The teacher read the paper in silence, and when she, had finished, she gestured at the 9 . “Oh, so it’s…” “Yes!” 10 Carla, opening the bag. “It’s a great big pile of smiles!” She opened the bag and photos of different 11 fell out. The rest of the class tried to 12 how Carla had managed to create such a great big chain of happiness. All there in the box was a photo of a big smile. But everyone who had seen it felt happiness being transmitted（传送）to them, and in return, without 13 , every person 14 with a smile of their own. She managed to 15 understanding of the smile truth that every time you smile you are sending a gift to the world.
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