疏水性氨基酸是 A．半胱氨酸 B．丙氨酸 C．亮氨酸 D．组氨酸

细菌是大地的清洁工，细菌在自然界的物质循环中起着重要的作用，细菌的这种作用体现生物的多样性价值是（　　）

A．直接价值

B．间接价值

C．潜在价值

D．美学价值

男性，40岁。临床诊断为等渗性缺水、低钾血症。经补液、补充钾盐后，出现脉率缓慢，手足感觉异常，肌无力，恶心、呕吐等症状。查体：血压90/60mmHg，脉搏50次／分。神志淡漠，心音减弱。ECG检查：T波高而尖，QT时间延长。临床判断为高钾血症，下列紧急治疗措施中，不宜采取的是（）。

A.立即停止钾盐的输入，静注5%碳酸氢钠60～100ml

B.25%葡萄糖溶液100～200ml，按每5g糖加入1IU胰岛素进行静脉滴注

C.硫酸镁1g，加入5%葡萄糖液或生理盐水500ml中静滴

D.呋塞米20～60mg加入50%葡萄糖40ml静注

E.10%葡萄糖酸钙20ml静脉注射

The passengers on the subway who caught a glimpse of me may have thought I was strange. In particular a gentleman sitting opposite me was always staring at me, looking at the cheese bread on the floor in front of me and then staring back at me. A passenger probably dropped it by mistake and got off at a previous stop, but the gentleman might not think so. “Next stop, St. Patrick Station” — my stop was quickly coming up. I had few minutes to either take the cheese bread, which nobody else was claiming, or left it there.

In those few minutes I felt my pride getting in the way. “What would others on the subway think of me if I took the cheese bread? Would they think that I was poor and hungry? Would they think that I was stealing?” The ignorant thing to do was say “yes” to any of those self-imposed questions. Actually, they were just my own thoughts. Though I would leave the subway, walk a block to my office, get settled at my desk, and sit comfortably in my office for the whole day, I couldn’t get rid of the enormous sense of guilt and regret.

My thoughts once pushed me towards pride and ignorance, but finally I had to admit I was wrong. This missing cheese bread could be a gift for a homeless person who suffered from cold and hunger. So why not overcome a little bit of my pride and pass along so much kindness?

Just as the doors opened at my stop, I grabbed the cheese bread and left the subway. It felt awesome, but I didn’t care if people were looking at me or what they were thinking. Instead of going directly to my office as usual, I walked a few more blocks up to Queen’s park, where I often saw a homeless man sitting outside. I always wanted to give him something, but only today I walked toward him, who wrapped himself in a sleeping bag. I was full of satisfaction, and so did the homeless man, I thought.

小题1:The gentleman kept staring at the author because _______.

A．he wanted to talk to the author

B．the author appeared too nervous

C．the author was going to get off

D．he might think the author dropped the bread小题2:The underlined word “self-imposed” in paragraph 2 probably means “_______”.

A．easily obtained

B．deliberately created

C．strongly supported

D．completely unaccepted小题3:Why did the author grab the cheese bread when he got off?

A．He noticed that no one was looking at him.

B．He didn’t want to see the cheese bread to go to taste.

C．He valued kindness more than his own pride.

D．He remembered a homeless man at that very moment.

四面斜坡，有一条正脊和四条斜脊，屋面稍有弧度（有重檐），被称为（）

A、攒尖顶

B、硬山顶

C、歇山顶

D、庑殿顶

经十二指肠 * * 排入十二指肠的物质主要包括（）

A.胃液

B.肠液

C.胆汁

D.胰液

E.胰岛素