下列变化不可能通过一步实验直接完成的是( ) A.Al(OH)3 → Al2O3 B.Al2O3 → Al(OH)3 C.Al → AlO2- D.Al3+ → Al(OH)3 答案:B28、The central government is calling on the whole nation
to make efforts to build______ harmonious society and_______ new
socialist countryside.
A.a;the
B.a;a C.the;x
D.x;the
评卷人
得分
三、阅读理解
(每空? 分,共?
分)