人格发展关键期是（） A.0～1岁 B.1～3岁 C.3～7岁 D.7～11岁 E.

At the age of sixteen, I joined a volunteer group with my dad．I went on my first volunteer project in West Virginia．On the night we arrived, we discovered that "our family" was living in a trailer（活动房车） that was in poor conditions．A crew had been wolfing on it for two weeks, but every time they finished one problem, another surfaced．

We decided the only reasonable solution was to bridle a new house – something unusual but necessary under these circumstances．The family was overjoyed with their new house that was twenty by thirty feet with three bedrooms, a bath and a kitchen．

On Tuesday of that week, while we ate lunch together, I asked the family's three boys, Josh, Eric and Ryan, "What do you want for your new room?" Expecting toys and other gadgets that children suavity ask for, we were astonished when Josh responded, "I just want a bed．"

The boys had never slept in a bed! They were accustomed to plastic mats．That night we had a meeting and decided that beds would be the perfect gift．On Thursday night, a few adults in our group drove to the nearest city and bought beds and new bedding．

When we saw the delivery truck coming, we told the family about the surprise．We could hardly contain ourselves. It was like watching excited children on Christmas morning．

That afternoon, as we fitted the frames of the beds together, Eric ran into the house to watch us．Too dirty to enter his room, he observed with wide-eyed enthusiasm from the doorway．

As my father slipped a pillowcase onto one of the pillows, Eric asked, "What is that?"

"A pillow," he replied．

"What do you do with it?" Eric continued to ask

"When you go to sleep, you put your head on it," I answered softly．Tears came to my eyes as my father handed Eric the pillow．

"Oh．．．that's soft," he said, hugging it tightly．

Now, when my sister or I start to ask for something that seems urgent, my dad gently asks, "Do you have a pillow?"

We know exactly what he means．

小题1:The author's first volunteer project was             .

A．working on a poor trailer

B．helping a poor family

C．donating beds and bedding

D．dealing with a housing problem小题2:On hearing Josh's answer, the author was shocked because           .

A．the family lived in a trailer

B．Josh didn't know what a bed was

C．Josh expected to get some toys

D．The boys had no bed to sleep in小题3:By "We could hardly contain ourselves．", the author means that they all

A．felt confused

B．felt excited with joy

C．couldn't help laughing

D．failed to keep the secret小题4:From the passage, we can learn that what Eric had never seen before is         .

A．a trailer

B．a bed

C．a pillow

D．a truck小题5:From the last two paragraphs, the author's father means that

A．what the author wants to get may be unnecessary

B．the author should not waste money on small things

C．the author should do more volunteer work for the poor

D．what he will buy is not what the author wants but a pillow

案例二：

已知某分部工程由A、B、C、D、E五项工作组成，其网络计划如下图所示，要求该分部工程必须在20天内完成。为了保证工期，需要进行赶工，相关的数据资料如下表所示。

[问题]

1．计算在标准工作情况下，该网络计划的各参数以及计划工期，并确定关键线路。

2．试确定在规定工期20天内完成该分部工程且增加的费用最少的网络优化方案。

什么是路政强制执行？

DSA查找上消化道大出血部位因时，重点检查的动脉是

A．膈下动脉

B．腰动脉

C．肾动脉

D．肠系膜上动脉

E．肠系膜下动脉

镜板与推力头分解时，拆卸的先后顺序为（）。

A.先拔销钉，后拆螺丝；

B.后拔销钉，先拆螺丝；

C.无关系；

D.可先可后;