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【单选题】
在爱牙日社区口腔健康咨询中人们提出了不少问题，口腔预防保健人员进行了认真分析，策划在不同人群中开展口腔健康教育活动。 根据我国具体情况，残疾人的口腔保健应从以下几个方面进行，除外A.
使用牙线
B.
特殊口腔护理
C.
早期口腔卫生指导
D.
氟化物和窝沟封闭
E.
选择合适的口腔保健用品
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举一反三
【简答题】不同代谢途径可以通过交叉点代谢中间物进行转化，在糖、脂、蛋白质及核酸的相互转化过程中三个最关键的代谢中间物是______、______和______。
【单选题】-- can we get there? --In five minutes.
A.
How often
B.
How far
C.
How soon
D.
How long
【单选题】How can we get rid of garbage? Do we have enough energy sources to meet our future energy needs? These are two important questions that many people are asking today. Some people think that man might b...
A.
The shortage of energy and air pollution.
B.
The shortage of energy and the shortage of empty land for holding garbage.
C.
Air pollution and the shortage of empty land for holding garbage.
D.
Air pollution and the shortage of fossil fuel.
【单选题】—______ can we get the photos? —In two days.
A.
How long
B.
How often
C.
How much
D.
How soon
【单选题】How can we get rid of garbage? Do we have enough energy sources to meet our future energy needs? These are two important questions that many people are asking today. Some people think that man might b...
A.
The shortage of energy and air pollution.
B.
The shortage of energy and the shortage of empty land for holding garbage.
C.
Air pollution and the shortage of empty land for holding garbage.
D.
Air pollution and the shortage of fossil fuel.
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