投标保证金的数额最高不得超过( )万元。A．60 B．80 C．100 D．150

Hi! I’m Harry. Life used to be kind of difficult for me. The muscles(肌肉) in my arms and legs are weak. I have to be in a wheelchair all day. I can’t use my legs at all, and I’m not too great with my hands. If I drop something it stays dropped until someone picks it up for me. I can’t open doors or switch lights on and off. Carrying everything I need for school is a problem too.

Now things are easier. I have a helping hand. Pete is a golden dog that has been trained to help kids like me. Pete was at dog training school for two years to learn how to do different tasks. I had to be trained too. I had to learn how to give Pete instructions and how to take care of him.

When Pete is working he doesn’t play around. My friends know they are not to pet him or call him when he is working. He can pull my wheelchair and pick up things I drop. Pete carries my books and lunch on his back. He pushes the button on the school lift and opens some kinds of doors. He even knows how to switch lights on.

But best of all, Pete is here when I need a friend.

小题1:According to the passage, who is Harry’s helping hand?

A．Pete

B．His teacher.

C．His brother

D．His parent小题2:Why is Harry kept in a wheelchair all day?

A．Because his legs are broken.

B．Because his leg muscles are weak.

C．Because he is too lazy.

D．Because he likes it.小题3:According to the passage, which of the following about Pete is not true?

A．Pete can clean Harry’s room.

B．Pete can switch lights on.

C．Pete can pull Harry’s wheelchair.

D．Pete can push the button on the school lift.小题4: What does the writer mean by saying “Pete is here when I need a friend.”?

A．Pete is only a helpful tool for him.

B．Pete is with him all the time.

C．Pete is a funny dog to make him happy.

D．Pete is not only a helping hand but also his good friend.

患者男，40岁，因“查体发现主动脉弓增宽”来诊。既往有高血压病史。多普勒超声心动图：无名动脉与左颈总动脉间主动脉弓重度狭窄，并狭窄后扩张，直径6cm，累及左颈总动脉、锁骨下动脉起始部及锁骨下动脉远端6cm。

为进一步明确诊断，首选的检查是（）

A.主动脉造影

B.多排CT

C.经食管多普勒超声心动图

D.心脏MRI

E.目前已确诊，无须其他影像学检查

下列哪些关联是正确的( ) 　　①郭守敬――十二节气历　　②炼丹术――火药　　③沈括――《梦溪笔谈》　　④东京――瓦市　　⑤元政府――宣政院

A．①②③④

B．①②④⑤

C．②③④⑤

D．①③④⑤

保卫科干部李某开玩笑，拿起桌上的手枪向张某打了一枪，不料枪中有子弹，张某被打死。李某的行为是（）。

A、间接故意

B、意外事故

C、疏忽大意的过失

D、过于自信的过失

德国的THEB系列移动变电站的绝缘等级为（）。

A、A级

B、B级

C、C级

D、H级