
X 光照片顯示一顆人類臼齒
Authored by Leung Kin梁志堅老師
Science
1st Grade
Used 1+ times

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6 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
以下 X 光照片顯示一顆人類臼齒:
以英文字母顯示最堅硬的部分。
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
試解釋為何進食後口腔的 pH 值下降。
因為口腔的 會把牙縫的食物分解,並釋出酸。
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
試解釋為何口腔低的 pH 值可能引致蛀牙。
因為低pH代表環境呈酸性,酸會溶解 的鈣,形成小洞。
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
試解釋為何口腔低的 pH 值可能引致蛀牙。
因為低pH代表環境呈酸性,酸會溶解琺瑯質 的 ,形成小洞。
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
試解釋為何口腔低的 pH 值可能引致蛀牙。
因為低pH代表環境呈 性,酸會溶解琺瑯質的鈣,形成小洞。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪種方法能正確地減少蛀牙。
多進食檸檬,因酸可殺死細菌
多進食檸檬,因檸檬含大量維生素C,可防牙肉出血。
進餐後吃香口膠,因香口膠可殺死細菌
減少進食次數,減少牙縫積存殘餘食物,減少細菌分解食物釋出酸的機會
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