【简答题】比较大小: 2- 3 ______ 2 -1 .
【判断题】The more you know about your audience, the more complicated preparation you will conduct.
【单选题】习近平强调,()是中国共产党执政兴国的第一要务。
【单选题】I don’t know how he can _____ himself for such conduct.
【单选题】李某是患有疾病的新生,经指定的二级甲等以上医院诊断不宜在校学习,学校批准后,其可保留入学资格()。
【简答题】(1)比较a与a+2的大小; (2)比较2与2+a的大小; (3)比较a与2a的大小。
【单选题】In order to know if you have osteoporosis or not, what test should you have to conduct?