A. provisions B. contracts C. treaties D. regulations 参考答案:A 答案解析:provision,“条款”、“规定”;contract,“合同”,姐The contract still holds.契约仍然有效。treaty,“条约”;regulation,“规章”。
第9题: [单项选择]Many newspapers printed the governor's statement ______ would support a tax cut. A. and he B. was that he C. which he D. that he 参考答案:D 答案解析:[考点] 同位语从句
[解析] he would support a tax cut对statement起解释说明的作用,为同位关系,故为同位语从句。that在同位语从句中不作成分,但一般不省
第22题: [单项选择]窝沟封闭预防龋齿时,清洁牙面的方法是() A. 反复漱口 B. 酒精棉球擦拭,高压水枪冲洗 C. 低速手机装锥状小毛刷或橡皮杯,蘸适量清洁剂刷洗牙面 D. 高速手机装球钻,去掉釉质表层 E. 高速手机装裂钻,去掉釉质表层 参考答案:C 答案解析:窝沟封闭清洁牙面的基本方法是:在低速手机上装上小毛刷,彻底清洁准备封闭的牙面窝沟部位,然后用水枪充分冲洗。故本题选C。注意必须用机用小毛刷配合三用枪进行牙面窝沟的清洁,单独使用三用枪达不到清洁效果。