题目

—Li Lin is very bright and studies hard as well. —It’s no ______ he always gets the first place in any examination. A. question     B. doubt  C. problem   D. wonder 答案：D 解析: it’s no wonder (+that从句)的意思是“难怪”，也可说成 No wonder (+that从句)。根据初中化学知识，下列物质间由一步反应即能实现转化的变化中，无法实现的是（ ）A．B．C．S→SO2→Na2SO3D．