探索自然|本集 精彩教學影片(講解老師:Bruce & Antony 老師)
A closer look at clouds and what they mean
On most afternoons, if you look up, you can see fluffy, white clouds floating in the sky. They seem to form slowly out of thin air and add a beautiful, magical quality to clear blue skies. Yet after a few minutes, they may fade away _(1)_.
Although clouds appear and disappear just like magic, scientists can explain how it happens. The process usually begins in the late morning, when the Sun _(2)_ the Earth’s surface. As the ground temperature increases, bubbles of warm air form and start to rise up into the sky. These air bubbles keep _(3)_ higher and higher like hot-air balloons. Finally, they are cooled down by cold air as they reach great heights. When the air bubbles get cooler, they can no longer hold all the moisture they contain. The _(4)_ moisture inside the bubbles turns into tiny drops of water. These drops of water then gather together to form clouds.
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By noon, the clouds will grow and spread across the sky. Later in the afternoon, however, many clouds will release the water in the form of rain and disappear from the sky.
1. (A) and change to dark colors (B) so they can take other forms (C) in order to create new ones (D) as if they never existed |
2. (A) shuts down (B) heats up (C) turns on (D) wears out |
3. (A) rise (B) rose (C) rising (D) to rise |
4. (A) extra (B) absent (C) obvious (D) ideal |
答案:1. (D) 2. (B) 3. (C) 4. (A)
1.第一題空格應選 (D) as if they never existed
理由
空格前一句提到,它們看似慢慢憑空形成,且由本句 前段的 Yet(然而)可以推測,幾分鐘後它們可能就會 逐漸消失,「彷彿不曾存在過」,得知(D) 應為正選。
2.第二題空格應選 (B) heats up
理由
空格後一句提到隨著地面溫度升高,故可推測太陽「使」地球表面「升溫」,得知 (B) 應為正選。
3.第三題空格應選 (C) rising
理由
a. 本空格測試下列固定用法:
keep + 現在分詞 繼續不斷地⋯⋯
The two students kept talking in class.
這兩位學生上課一直講話。
b.空格前有動詞 keep,根據上述用法,故知 keep 之後應接現在分詞,得知 (C) 應為正選。
4.第四題空格應選 (A) extra
理由
空格前一句提到,氣泡降溫時,它們無法再容納其所 含的所有水分,故推測氣泡中「多餘的」水分變成微 小的水滴,得知 (A) 應為正選。
General MacArthur once said, “Old soldiers never die; they just fade away.”
麥克阿瑟將軍曾說:『老兵不死,只是凋零。』
Diana had an argument with her husband and went for a walk to cool down.
黛安娜和先生吵架,因此去散步讓自己冷靜下來。
I turned on the fan to cool the room down.
我把電風扇打開,讓房間涼快起來。
There is a hot-air balloon festival in Taitung every year.
臺東每年都有熱氣球節。
仔細觀察雲並了解雲的奧祕
在大多數的午後,如果你抬頭,你會看見飄浮在空中的蓬鬆白 雲。它們看似慢慢地憑空形成,為晴朗的藍天增添一種美麗又魔幻的 特質。然而幾分鐘後,它們可能就會逐漸消失,彷彿不曾存在過。
雖然雲像魔法般出現又消失,科學家們可以解釋這是如何發生 的。這個過程通常在上午晚些時候開始,當太陽使地球表面升溫時。 隨著地面溫度升高,暖空氣的氣泡形成並開始升上空中。這些氣泡像 熱氣球一樣持續越升越高。最後,當它們到達很高的高度時,會因冷 空氣而降溫。氣泡降溫時,它們無法再容納其所含的所有水分。氣泡 中多餘的水分變成微小的水滴。這些水滴接著聚集在一起形成雲。
到了中午,雲會逐漸擴大並散布在空中。然而,接著到下午時, 許多雲會以雨的形式釋放水分,然後從天空中消失。