Which of the following is the main idea of the passage
A. Unfortunately many expectant mothers do not take the necessary precautions in order to care for their unborn child.
B. To have a healthy baby, expectant mother must take special precautions.
C. An expectant mother should avoid alcohol during her pregnancy.
D. An expectant mother should be very careful about her medication.
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This passage tries to tell you how to______.
A. avoid mistakes about both money and people
B. say things elegantly
C. avoid mistakes in understanding what people tell you
D. keep people friendly without trusting them
在对某小学学生进行口腔健康检查前，4名研究人员做了标准一致性检验，他们的Kappa值都在0.75～0.80之间。4名研究人员的检查可靠度为
A. 不合格
B. 可靠度中等
C. 可靠度优
D. 完全可靠
E. 不能判断
患者两上颌侧切牙缺失，缺牙间隙较小，两中切牙之间有2mm间隙，最佳的修复方案为
A. 只固定桥修复缺牙
B. 先光敏树脂关闭两中切牙之间间隙，再修复
C. 先正畸关闭两中切牙之间间隙，再固定修复
D. 可摘局部义齿修复缺牙以及牙间隙
E. 两中切牙烤瓷冠修复，然后可摘局部义齿修复缺牙
某学校的保健老师在家长课堂讲课时，旁听的口腔专家指出下面哪一项说法容易引起误导
A. 氟化物的使用可减少光滑面龋的发生
B. 窝沟封闭可有效预防窝沟龋的发生
C. 替牙期要特别注重第一恒磨牙的保护
D. 10岁以前儿童需要家长帮助刷牙
E. 刷牙可以有效预防窝沟龋和光滑面龋
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