下列选项中的诗句填入《到京师》一诗画横线处，恰当的一项是[ ] 城雪初消荠菜生

肾病综合征患者表现为起始眼睑浮肿，继则四肢、全身亦肿，皮肤光泽，按之凹陷易恢复，伴发热，咽痛，咳嗽，小便不利等症，舌苔薄白，脉浮。其中医证型是

A．风水相搏证
B．湿毒浸淫证
C．水湿浸渍证
D．脾虚湿困证
E．肾阳衰微证

.短文填词

Tom had never been to the north of the country before.

But he knew w________to expect, because he had

two friends who had t________him a lot about it.

It was certainly colder than in the south but the air

was c________and dry, and most days the sky

was a beautiful blue.The people seemed

________(有礼貌的). In the south no one spoke

to you at bus________(停车站) or in the markets,

while here people smiled________you and said a few

words.But he was still lonely.The other students did

their________to look after him.

________(然而), he missed his family very much.

At home he was always________(围绕) by

his family and friends, while here he spent four or

five evenings a week_s________alone in his room.

除美国和英国以外的其他各国货币外汇牌价都是采用间接标价法。（）

关于中枢兴奋传播的特征，正确的描述是（）

A.双向传布

B.对内环境变化敏感

C.不衰减传递

D.兴奋节律不变

E.不易疲劳

如何发现存在系统误差？