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【单选题】
龋病预防方法中属于菌斑控制的方法是A.
化学方法
B.
机械方法
C.
生物方法
D.
植物提取物
E.
以上说法均正确
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参考解析：
知识点：
皮皮学刷刷变学霸
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【单选题】对发绀的描述，你认为下列哪项是错误的
A.
发绀是指血中还原血红蛋白增多
B.
广义的发绀还包括高铁血红蛋白血症和硫化血红蛋白血症
C.
中心性发绀可分为：肺性发绀和心性混合性发绀
D.
周围性发绀可分为：瘀血性和缺血性周围性发绀
E.
真性红细胞增多症所致发绀不属于周围性发绀
【单选题】Living with Computer After too long on the Net, even a phone call can be a shock. My boyfriend's Liverpudlian accent suddenly becomes hard to understand after the clarity of his words on screen; a sec...
A.
obscure.
B.
distinct.
C.
unreal.
D.
misleading.
【简答题】完形填空。 Now we live in the 'computer age'. People like scientists, teachers, writers and even students use computers to do much 1 . But more than 30 years ago, 2 couldn't do much. They were very big and...
【单选题】Living with Computer After too long on the Net, even a phone call can be a shock. My boyfriend’s Liverpudian accent suddenly becomes hard to understand after the clarity of his words on screen; a secr...
A.
obscure.
B.
distinct.
C.
unreal.
D.
misleading.
【简答题】阅读理解。 Chinese people are now living happier and longer than before. According to the latest study, the number of people over 60 years old is 130 million, up 10 percent of the whole population, ...
【单选题】First, my husband became a coach _______, and now my son is becoming a mouse __________.
A.
potato, tomato
B.
potato, potato
C.
tomato, potato
D.
tomato, tomato,
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