若黄赤交角变小，我国北方地区夏季获得的太阳辐射能与现在相比，_爱下问搜题

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问题选择题

若黄赤交角变小，我国北方地区夏季获得的太阳辐射能与现在相比，正确的是 [ ]

A、不变

B、增加

C、减少

D、不确定

答案

答案：C

完形填空

A group of graduates got together to visit their old university professor. They talked about the 36 topic-happiness. But soon their conversation turned into complaints about 37 in work and life.
To offer his guests coffee, the professor went to the kitchen and 38 with a large pot of coffee and a variety of 39 -plastic glass, metal, porcelain (陶瓷), some plain-looking some very 40 .The professor told his students to help themselves to hot coffee.
When all the students had a cup of coffee in 41 . the professor said:" lf you have noticed, all the nice-looking 42 . cups were taken, leaving behind the plain and cheap ones. While it is 43 for you to want only the best for Your belives, that is the 44 of your problems and stress. The professor continued," Believe that the cup itself adds no 45 to the coffee. ln most cases it is just more expensive and in some cases it even 46 what we drink. What all of you 47 wanted was coffee, not the cup, but you consciously went 48 the best cups. Now 49 this: life is coffee, the jobs, money, and 50 in society are the cups， which are just tools to hold and 51 life, and the different types of cups we have don't decide, nor 52 the quality of life. lf we concentrate only on the cups, we will 53 to enjoy the coffee in it. So don't let the cups 54 you...enjoy the coffee instead."
At these words, the graduates looked at each other in 55 embarrassment.

判断题

扫描发生器是示波器垂直通道中的重要组成部分。