阿摩線上測驗
46 According to the passage, which of the following is true about weekend weather?
(A)It has its own highs and lows.
(B)The nights are cooler on weekends.
(C)It gets warmer as the week progresses.
(D)The conditions remain the same all week long.
統計： A(250), B(82), C(79), D(62), E(0) #1348327
詳解 (共 5 筆)
感觉云和雨似乎較會發生在周末可能不仅仅是一个神话。周末的天气确实不同于某些地方工作日的天气，根据研究人员的研究超过40年的日常温度读数从10000世界各地的气象观测站。在他们的研究中，研究人员主要集中在白天和夜间的温度之间的温度差异。这种差异的测量称为气温日较差，或DTR。这项研究的一部分涉及美国大陆的660个气象站。在超过230个网站，研究人员发现，平均DTR为星期六，星期日，和星期一不同于星期三，星期四和星期五的平均DTR。虽然差异很小，只有几十分之一摄氏度，图案是惊人的足以让科学家们注意到。那是，一周气温变化。研究人员说，这种每周的上升和下降不与任何自然周期的增长，研究人员说。相反，它是人类活动可能是空气污染所造成的这些活动负责这些天气的影响。例如，被污染的空气中的微小颗粒会影响云盖的数量，而这又会影响到每天的温度。因此，从美国西部小风媒颗粒，产生在平日，可能首先影响西南家天气接近，再后来影响中西部的天气。所以，停止感觉像周末的天气是为了让我们。它只是有很多做的方式，风吹，它来自。
請依下文回答第 46 題至第 50 題:
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The feeling that clouds and rain seem more likely to occur on weekends may be more than just a myth. Weekend weather does differ from weekday weather in certain places, according to researchers who studied more than 40 years of daily temperature readings from 10,000 weather stations worldwide. In their study, the researchers focused on temperature differences between daytime highs and nighttime lows. This difference measurement is called the diurnal temperature range, or DTR.
Part of the study involved 660 weather stations in the continental United States. At more than 230 of these sites, the researchers found that the average DTR for Saturday, Sunday, and Monday was different from the average DTR for Wednesday, Thursday, and Friday. Although the difference was small—only several tenths of a Celsius degree, the pattern was striking enough to make the scientists take notice That is, the DTR changes on a 7-day cycle.
This sort of weekly rise and fall doesn’t line up with any natural cycles, the researchers say. Instead, it is the human activities—possibly air pollution by those activities—that are responsible for these weather effects. For example, tiny particles in the polluted air could effect the amount of cloud cover, which would in turn affect daily temperatures. Accordingly tiny windborne particles from the western part of the United States, generated on weekdays, might first affect weather close to home in the southwest, and then later influence mid-western weather. So, stop feeling like the weekend weather is out to get us. It simply has a lot do with which way the wind blows and where it comes from.