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康自5上期末 是非 A

Authored by Youjiu Youjiu

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3rd Grade

Used 1+ times

康自5上期末  是非 A
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67 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

當燃燒的蠟燭蓋上廣口瓶,經過一段時間燭火會熄滅,這是因為沒有充足的氣體可以幫助蠟燭燃燒。

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2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

一天中,中午12時太陽的高度角最大。

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3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

食品包裝裡會充滿氧氣,可以避免食品壞掉。

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4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

不論哪一個季節,太陽升起時的方位和高度角都是一樣的。

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5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

電線短路是近年來家庭火災的主要原因之一。

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6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

燃燒三要素是有可燃物、有二氧化碳和達到燃點,缺少任何一個條件就無法燃燒。

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7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

秋、冬兩季的夜晚,可以利用仙后座來尋找北極星。

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