题型：选择题 据报道，化学家创造出一种物质“干水”，其每个颗粒含水95%，外层是SiO2；干水吸收CO2的能力比普通清水高三倍。下列有关说法正确的是（ ）A．干水中的水分子不再运动B．用干水吸收CO2有助于减缓温室效应C．干水吸收CO2的过程只发生物理变化D．干水和干冰是同一种物质 查看答案
题型：补全对话，情景问答 用方框中词语的适当形式补全对话。come, homework, listen, see, help, be, write, go, like, look, song, tell A: Look! What is Li Lei 1______ on the black- board? B: Let's go and have a 2______! A: Li Lei, what 3______ you writing? C: Xie Xiaodong is 4______ to our school this afternoon. He is going to sing his new 5______ I want 6______ this to all the students. Come, I want some 7______. A: OK. Are you going to 8______ to Xie Xiaodong's songs, Li Lei? C: Certainly! I 9______ him very much. And you? A: No, I want to do my 10______ at home. 查看答案
题型：单项选择题 以下哪项不是群体决策的缺点（）。A.群体决策要比个人决策花更少的时间B.支配群体的少数人经常对最终的决策有重要的影响C.屈从压力削弱了群体中的批判精神D.群体成员分担责任但实际上谁对最后的结果负责却不清楚 查看答案
