问题
单项选择题
对1年前做过口腔检查的200名干部进行口腔健康检查时,发现又有20名干部新发生龋,描述这种新发龋情况的指标是()
A.龋均
B.患龋率
C.发病率
D.构成比
E.充填率
答案
参考答案:C
对1年前做过口腔检查的200名干部进行口腔健康检查时,发现又有20名干部新发生龋,描述这种新发龋情况的指标是()
A.龋均
B.患龋率
C.发病率
D.构成比
E.充填率
参考答案:C
单词填空:从方框中选择恰当的单词填入句子中,注意使用其正确形式。( 每题0.5分,共4分。答案请写在答题纸上)
小题2:He spent years ___________________ his skills as a photographer. 小题3:Beth __________________ a meeting with the marketing director. 小题4:Don will only buy the motorcycle if his parents _____________. 小题5:I could hear them ____________________ next door. 小题6:Plastic bottles can be ______________ into clothing. 小题7:The river has been seriously ______________ by a chemical factory. 小题8:Tom ____________ confidence and needs a lot of encouragement. |