第5题: [单项选择]One day last week he came to my house with a gloomy face. A. happy B. sad C. shining D. angry 参考答案:B 答案解析:[解析] 上周有一天他来到我家,脸上一副闷闷不乐的神情。句中gloomy:沉闷的,令人沮丧的。happy:快乐的。sad:难过的。shining:光亮的,华丽的,如:She looked at him
第20题: [单项选择]关于固定桥龈端的描述,错误的是 A. 与牙槽嵴黏膜接触面尽量小 B. 颈缘线与邻牙一致 C. 瓷表面应光滑 D. 与牙槽嵴黏膜紧密接触 E. 扩大舌侧邻间隙 参考答案:E 答案解析:固定桥桥体龈端基本要求是与牙槽嵴黏膜有良好的接触,无静压力,能够防止食物滞留;应高度光滑,易于清洁;桥体龈端材料的生物兼容性良好;桥体龈端的唇颊侧颈缘曲线与邻牙协调。
A. have been cancelled B. are put to a later time C. took place according to schedule D. took place ahead of schedule 参考答案:B 答案解析:[听力原文]22-23 Planned peace talks between rebels and the Zairian government again have been p
第33题:[多选题]光电测距成果的改正计算有()。 A..加乘常数改正计算 B..气象改正计算 C..倾斜改正计算 D..三轴关系改正计算 E. 测距、测角精度计算 参考答案:ABC