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【单选题】
关于窝沟封闭的优缺点描述,正确的是A.
窝沟封闭剂中的树脂材料中含双酚A会对人体会产生不良影响，所以应该选择其他类型的材料，如玻璃离子材料
B.
窝沟封闭在酸蚀过程中虽然损伤少量牙体组织，但是是可恢复的，不会对牙齿造成影响
C.
出发育尚未完全、表面钙化不足、耐酸性差、同时窝沟又深的牙，窝沟封闭可以起到很好的防龋效果
D.
对于窝沟已经龋坏的牙，窝沟封闭也能达到效果
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皮皮学刷刷变学霸
举一反三
【多选题】巨噬细胞的主要功能有( )
A.
吞噬、杀灭病原菌和异物等
B.
分泌参与炎症反应的生物活性介质
C.
摄取并处理抗原，并把抗原信息递呈给淋巴细胞
D.
分泌抗体，中和炎症中产生的有害物质
【简答题】绞尽脑汁,苦苦寻找
【单选题】听力原文：W: I love the beach when the sand is fine and the water is just barely making waves. M: I prefer an angry sea. That makes me feel better whenever I'm sad. Q: What does the man like? (17)
A.
A stormy ocean.
B.
Calm water.
C.
Golden sand.
D.
Little waves.
【简答题】名词解释:移动医疗
【单选题】As the final exam is just around the corner, all the students are in reviewing the lessons carefully. [ ]
A.
occupied
B.
practising
C.
busying
D.
devoted
【简答题】乏味的怪物 2、满怀着诚挚期待 3 、绞尽脑汁苦苦寻找 4、关于正确使用英语能力下降的问题 5、 ..... 应归咎于 ....
【单选题】New Zealand is the first country in the world to get the new day, because
A.
it is just east of the International.
B.
it is just west of the International Date Line.
C.
it is located just between the equator and the South Pole.
D.
it is located in the Southern Pacific Ocean.
【单选题】Mistakes don't just happen , they occur for a reason. Find out the reason, and then making the mistake becomes _____ . [ ]
A.
favourable
B.
precious
C.
essential
D.
worthwhile
【单选题】Mistakes don't just happen; they occur for a reason. Find out the reason, and then making the mistake becomes ______. [ ]
A.
favorable
B.
precious
C.
essential
D.
worthwhile
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