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【简答题】
Like fine food, good writing is something we approach with pleasure and enjoy from the first taste to the last. And good writers, good cooks, do not suddenly appear full-blown. Quite the contrary, just as the cook has to undergo an intensive training, mastering the skills of his trade, the writer must sit at his desk and devote long hours to achieving a style in his writing, whatever its purpose-schoolwork, matters of business, or purely social communication. You may be sure that the more painstaking the effort, the more effective the writing, and the more rewarding. There are still some remote places in the world where you might find a public scribe to do your business or social writing for you, for a fee. There are a few managers who are lucky enough to have the service of that rate kind of secretary who can take care of all sorts of letter writing with no more than a quick note to work from. But for most of us, if there is any writing to be done, we have to do it ourselves. We have to write school papers, business papers or home papers. We are constantly called on to put words to paper. It would be difficult to count the number of such words, messages, letters, and reports put into the mails or delivered by hand, but the daily figure must be enormous. What is more, everyone who writes expects, or at least hopes. We want whatever we write to be read, from first word to last, not just thrown into some “letters-to-be-read” file ( 档案 ) or into a wastepaper basket. This is the reason we bend our efforts toward learning and practicing the skill of interesting, effective writing.
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举一反三
【单选题】茶荷是用来从茶叶罐中( )的器具,并用于欣赏干茶的外形及茶香。
A.
均匀茶汤浓度
B.
盛取干茶
C.
放置茶杯
D.
储放茶渣
【单选题】(19~20题共用题干)王女士,行双侧腋臭切除术,采用普鲁卡因局部浸润麻醉。术中病人出现烦躁、惊厥,发绀,心率126次/分。应首先考虑
A.
兴奋型毒性反应
B.
抑制型毒性反应
C.
过敏反应
D.
中毒性休克
E.
癔病发作
【简答题】柠檬市场效应是指在信息不对称的情况下,往往好的商品遭受淘汰,而劣等品会逐渐占领市场,从而取代好的商品,最终导致市场中都是劣等品。 根据上述定义,下列不属于柠檬市场效应的是( )。
【判断题】柠檬市场效应是指在信息不对称的情况下,往往好的商品遭到淘汰,而劣质品会逐渐占领市场,从而取代好的商品,导致市场中都是劣等品。
A.
正确
B.
错误
【判断题】柠檬市场效应是指在信息不对称的情况下,往往好的商品遭到淘汰,而劣质品会逐渐占领市场,从而取代好的商品,导致市场中都是劣等品。
A.
正确
B.
错误
【单选题】若f(x)的导函数是sinx,则f(x)有一个原函数为( )
A.
1+sinx
B.
1一sinx
C.
1+cosx
D.
1一cosx
【简答题】解释描述统计和推断统计
【单选题】若 的导函数是 ,则 有一个原函数是( ).
A.
;
B.
;
C.
;
【单选题】茶荷是用来从茶叶罐中( )的器具,并用于欣赏干茶的外形及茶香。
A.
取茶渣
B.
均匀茶汤浓度
C.
盛取干茶
D.
清洁茶具
【多选题】杨氏双缝干涉实验是托马斯【图片】杨于1801年开展实验,该实验第一次观察到了光的干涉现象,是波动光学的有力证据。在今天看来,杨氏双缝干涉实验是一个很简单的实验,但为什么这么一个简单的光学实验,却能在光学发展史上有如此重要的地位?以下对这一问题的分析,你认为合理的是( )。
A.
托马斯 杨很巧妙的解决了相干光的获得方法,做出了光波的干涉现象。
B.
杨氏双缝干涉实验现象有力的支持了光的波动说,从实验上证明了光的波动性。
C.
杨氏双缝干涉实验从实验上验证了惠更斯-菲涅尔原理的正确性,是子波干涉的有力证据。
D.
杨氏双缝干涉实验在很大程度上开启了波动光学研究之门。
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