In the past 10 years, （ ） measures have radically reduced levels

In the past 10 years, （ ） measures have radically reduced levels of tooth decay in children.
A、primitive
B、preventive
C、predictable
D、premature
【正确答案】：B
【题目解析】：primitive a. 原始的； a primitive instinct 原始本能preventive a. 预防性的 take preventive action 采取防范措施predictable a. 可预见的 The end of the book was entirely predictable.premature a. 未成熟的，仓促的 a premature conclusion句意：过去10年中，预防措施大大减少了儿童蛀牙的问题。