下列常见物质中，属于氧化物的是（ ） A．NaCl B．Al2O3 C．CH4 D．Cu（OH）2
She looks very________but I can’t remember her name. A.similar B.familiar C.friendly D.strange
—Peter looks sleepy. —So ________ if you had a fever. A. did you B. would you C. you did D. you would
. Most pop music is influenced, __________a greater or lesser degree, by the blues. A．to B．on C．for D．within
下列各项中的物质已经标明了其在使用过程中所发生的变化，其中不作氧化剂的是（ ）例：“葡萄糖注射液（C6H12O6→CO2）”表示葡萄糖进入人体后
根据材料与所学知识回答问题。 近代自西方传教士进入中国内地传教后，传教士、教民与普通民众不断发生冲突，史称“教案”。1862年。江西巡抚沈
关于“DNA的粗提取和物理性状观察”实验： （l）实验材料选用鸡血球（血细胞）液，而不用鸡全血，主要原因是鸡血球 液中有较高含量的＿＿＿＿＿
Nine in ten parents said there were significant differences in their approach to educating their children compared with ______ of their parents． A．those B one
