首页
登录
职称英语
Why has the woman brought up the subject of snowflakes? [br] [originaltext]W: H
Why has the woman brought up the subject of snowflakes? [br] [originaltext]W: H
游客
2023-11-14
27
管理
问题
Why has the woman brought up the subject of snowflakes? [br]
W: Have you ever looked really closely at the snowflake?
M: Sure. But they usually melt too fast for me to get a close look. Why do you ask?
W: I’m just curious. I was reading an article about the formation of snowflakes and I realized that I had never paid much attention to them before.
M: Well, there’s a big variety, isn’t there?
W: Yeah. But they all have one of three basic forms, hexagonal columns, hexagonal plates, and branching star-shaped form.
M: I wonder why the forms are different. Maybe because ice starts to form on dust particles with different shapes.
W: Well, I thought it might have something to do with the Water saturation of the air, but we were both wrong. The author of this article did extensive research and concluded that the shape of snow crystals is largely controlled by the temperature of the air. For example, the feathery star-shaped snowflake that everyone thinks is typical occurs only at a specific temperature.
M: Doesn’t the relative humidity have anything to do with the shapes?
W: Apparently not. The effective super-saturation is simply to alter growth rate. The greater use the saturation, the faster the snowflakes form.
M: Mm. next time it snows, I’ll make a point of taking a closer look.
选项
A、One.
B、Two.
C、Three.
D、Four.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3186033.html
相关试题推荐
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsy
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsy
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsy
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsy
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsy
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsy
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsy
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsy
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsy
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsy
随机试题
Forthispart,youareallowed30minutestowritealettertothemayorofthe
弹簧受力压缩,如果压力消失后,弹簧能够恢复原状,那么此时弹簧发生的变形为()。
多潘立酮与下列哪些药物合用,可能增加尖端扭转型室性心动过速的风险()A:伏立康
下列哪项是支气管哮喘病人使用茶碱类药物的正确方法A.用药剂量不超过1.5g/d
新建变电站()应在投运前一周内录入PMS系统。设备台账$;$竣
某建筑工程队工人要用铁丝捆扎塑料管,有四种规格的铁丝可供使用,1.6米长的能捆1
口服奥司他韦(达菲)治疗流感宜及早用药,较为有效的用药时间是症状出现的A.48小
在工程质量验收各层次中,总监理工程师可以组织或参与( )的验收。A.检验批 B
糖尿病引起酮症酸中毒的直接原因是( )。A.组织利用糖障碍 B.尿中排出糖增
男,58岁。上腹胀、隐痛2个月,伴食欲减退、乏力、消瘦、大便发黑。查体:消瘦,浅
最新回复
(
0
)