使用中的胰岛素笔芯不宜冷藏，在室温下最长能够保存（） A.1周 B.2周 C.3周

孕妇，23岁，因"停经34周，活动后憋喘、气促1天"入院。否认既往哮喘病史，昨日轻微活动后即感不适，休息后无不适，夜间可平卧，查体：T36.8℃，P95次／分，R20次／分，BP128/88mmHg，口唇轻度发绀，无杵状指。听诊：双肺呼吸音略粗，双肺底闻及少许湿啰音，心律规整，第二音亢进，胸骨左缘第二肋间闻及3／6收缩期喷射性杂音。宫高29cm，ROA，FHR：140次／分，双下肢水肿，未触及宫缩。

要确诊，需要对患者进行以下哪些检查()

A.心导管检查

B.超声心动图

C.孕期超声

D.胸片

E.心电图

F.凝血五项

When friends and family heard what I was planning, they wondered if I had gone crazy. But here I was in New Mexico, working at a youth farm as a volunteer. I wanted to give back to society. The farm is one of the nonprofit (非盈利的) camps in New Mexico. Founded in 1998, it provides a free camp for the kids whose families are poor. My main responsibility was to look after them.

More than anything, I was excited. I had the opportunity to influence these kids’ lives. I could help them have fun. At the beginning, I couldn’t help feeling nervous. By the end of the first week, I had felt completely at ease. Each child listened to me and enjoyed the games we played. This farm was their heaven, and each child truly felt beatific.

Harrison was probably the most troubled child I saw all summer. He couldn’t deal with anger. As soon as I met him, it was clear that he’d never been shown kindness or patience. His temper would unexpectedly fly out of control. He refused to play games with us and hit other kids at the very start. He was always worried that I would shout at him or hit him. I told him that I would never do that. And I simply educated him to be a kind and patient boy. After Harrison’s going home, his mother wrote to tell me how differently her son reacted to others and how much gentler he had become.

The kid was not the only one that changed. I changed, too. I grew to appreciate my caring family. I became more patient, too. My eyes were also opened to the different situations people live in. Giving myself to show them love was the most meaningful part of my service. As the saying goes, love is, above all, the gift of oneself.

小题1:For what purpose did the author work at the youth farm? (no more than 6 words)

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小题2:What kind of kids could come to the camp? (no more than 6 words)

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小题3:What does the underlined word “beatific” mean? (1 word)

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小题4:How did the author change Harrison’s character? (no more than 12 words)

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小题5:Do you want to be a volunteer like the author? Why? (no more than 20 words)

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精密度

当点在直线上时，由正投影的基本性质可知，点的投影必然同时满足（）。

A.类似性

B.平行性

C.从属性

D.定比性

E.积聚性

50kg/m钢轨9号普通单开道岔全长（）mm。

A、37907

B、28848

C、36815

D、29569