下列叙述哪项不是低血钾的心电图特征（）。 A.T波低平、双相、倒置 B.S-T段降低

An artist went to a beautiful part of the country for a holiday and stayed with a farmer. Every day he went out with his painting brushes and painted till evening. When it got dark, he went back to the farm and had a good dinner before he went to bed.

At the end of his holiday he wanted to pay the farmer, but the farmer said, “No, I don’t want money. But give me one of your pictures. What’s money? In a week it will all be finished, but your picture will still be here.”

The artist was very pleased and thanked the farmer for saying such kind words about his pictures. The farmer smiled and answered, “It’s not that. I have a son in London. He wants to become an artist. When he comes home next month, I’ll show him your picture, and he will not want to be an artist any more, I think.”

小题1: Every day, the artist ___________.

A．helped the farmer to do some farming

B．went out to visit his friends

C．painted pictures outside

D．enjoyed the beautiful scenery小题2: The artist wanted to pay the farmer, but the farmer ___________.

A．wanted nothing

B．wanted much more money

C．didn’t want any things at all

D．wanted one of his pictures instead of money.小题3: After hearing the farmer’s words, perhaps the artist would be ___________.

A．sad

B．happy

C．thankful

D．excited

ZnSe是一种光电性能优异的半导体材料，人们开发出了多种制备ZnSe纳米粒子的方法．某研究小组用如下方法制备了ZnSe纳米粒子：

（1）SeO₂能溶于水，溶解过程中的化学方程式：______；

（2）硒酸（H₂SeO₄）的水溶液按下式发生一级和二级电离：

H₂SeO₄=H⁺+HSeO₄^-；HSeO₄^-

H⁺+SeO₄^2-，K₂=1.0×10^-2（298K）

Na₂SeO₄溶液显______（填“酸性”、“中性”、“碱性”）．理由______（用离子方程式表示）

（3）已知肼（N₂H₄）有强还原性，在反应釜中与SeO₃^2-反应的氧化产物是N₂，请写出该反应的离子程式：______．

（4）使用合适的催化剂和电极材料，以N₂、H₂为原料，以HCl-NH₄Cl为电解质溶液构成新型燃料电池，同时达到固氮作用．该电池的正极反应式为______．

银行汇票存款通过( )账户进行核算。

A．银行存款

B．“银行汇票存款”

C．“其他货币资金-银行汇票”

D．“备用金”

在首站(入境站)接团当天，全陪应与地陪核实旅游团所乘交通工具抵达的准确时间，并至少提前( )到达接站地点，与地陪一起迎候旅游团。

A．15分钟

B．20分钟

C．30分钟

D．40分钟

湿温病，症见发热，口渴，咽喉肿痛，小便黄赤，身目发黄，脘腹胀满，苔黄腻，脉滑数，其辨证为（）

A.湿热困阻三焦

B.湿热积滞交结胃肠

C.湿热蕴毒

D.湿热并重，困阻中焦

E.湿热阻于下焦