题型:问答题 —He didn't feel a bit nervous when ________.—No. He'd had a lot of time ________ for it after all. A.interviewing; to prepare B.interviewed; to prepare C.interviewing; preparingD.being interviewed; preparing 查看答案
题型:问答题 从Ⅱ栏中找出与Ⅰ栏相匹配的答语。 Ⅰ ( )1. Where is your sister? ( )2. Does he like English? ( )3. Where does a panda live? ( )4. What fruit do you like? ( )5. I'm sorry I'm late. Ⅱ A. In a forest. B. It doesn't matter. C. No, he doesn't. D. I like pears, apples and bananas. E. She is at home. 查看答案
题型:问答题 某学习小组为了探究 BrO3-+5Br-+6H+=3Br2+3H2O 反应速率(v)与反应物浓度的关系,在20℃进行实验,所得的数据如下表:实验编号相关数据①②③④⑤c(H+)/mol•L-10.0080.0080.0040.0080.004c(BrO3-)/mol•L-10.0010.0010.0010.0020.002c(Br-)/mol•L-10.100.200.200.100.40v/mol•L-1•s-12.4×10-84.8×10-81.2×10-84.8×10-8v1下列结论不正确的是( )A.若温度升高到40℃,则反应速率增大B.实验②、④,探究的是c(BrO3-)对反应速率的影响C.若该反应速率方程为v=k ca(BrO3-)cb(Br-)cc(H+)(k为常数),则c=2D.实验⑤中,v1=4.8×10-8mol•L-1•s-1 查看答案