以下有关电子邮件说法中正确的是。（）A.电子邮件很安全，不会丢_爱下问搜题

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问题单项选择题

以下有关电子邮件说法中正确的是。（）

A.电子邮件很安全，不会丢失

B.电子邮件传输速度快、范围广、价格便宜

C.电子邮件只能传输文本信息

D.一封电子邮件只能发给一个人

答案

参考答案：B

完形填空

When I began teaching in a university, I was invited to a workshop for new professors. I had ____ a long time learning what to teach, but not learning how to ____ it. Somehow, my university seemed to hope a weekend spent with experienced professors would ____ for that. My colleagues presented wellcrafted lectures about the tools they used. I enjoyed their ___， but do not remember a thing they said.
At a coffee break during the lectures, finding myself ____， I turned to a mathematics professor standing nearby. I asked him what his favorite teaching ____ was. “A cup of coffee，” he said, “I talk too much and too fast in the classroom. Students sometimes have trouble ____ me. So when I've said____ that I want my students to think about, I would____ and take a sip of coffee. It lets what I've just said sink in.”
When we were called to the next talk, he put down his cup and I ____ there was not a trace of coffee in it. “My doctor ____ me to stop drinking coffee，” he explained. “So I have always used a(n)____ cup.” I decided to try his ____ in my class.
I took a cup of coffee with me to my next class. It helped. My pauses, as I ____ the coffee, not only gave my students ____ to think about what I had said, but gave me time to think about what I was going to say next. I began to use my ____ to look around the room to see how my students were reacting to what I had just said. When I saw their ____ wander, I tried to bring them back. When I saw them puzzled over some concept that I thought I had ____， I gave another example. My ____ became less organized and less brilliant, but my students seemed to ____ me better.

A．experiences

C．presentations

单项选择题共用题干题

患者，男性，24岁，一天前被小汽车撞伤左下腹部，即感腹痛，以左下部为著，伴恶心、呕吐，呕吐物为胃内容物。查体：T：38.9℃，P：120次／分，R：28次／分，BP90/60mmHg；痛苦面容，较烦躁，唇干，四肢稍发冷，心肺未见异常，腰部无外伤，腹式呼吸消失，全腹压痛，反跳痛，肌紧张，肝浊音界缩小，肠鸣音消失，腹腔穿刺抽出有粪臭味，涂片脓球（+++）。血白细胞15～10/L，N93%。

手术治疗原则错误的是（）。

A.吸净积血，找到脾动脉

B.急诊行剖腹探查手术

C.首先找到脾蒂，控制出血

D.开腹后即用大止血钳在积血中盲夹脾蒂

E.切除脾脏