Will you please explain It( )me again
A.of
B.with
C.for
D.against
参考答案:C
解析: 句意为:你能再为我解释一遍吗
海南三亚一中月考3,24)So difficult _______it to work out the problem that I decided to ask Tom for some advice.
A.I did find
B.did I find
C.I’ve found
D.have I found
下列化学反应中,属于分解反应的是( )
A.2H2+O2点 点燃 . 2H2O
B.2KMnO4 △ . K2MnO4+MnO2+O2↑
C.Fe2O3+3CO 高温 . 2Fe+3CO2
D.CuSO4+2NaOH═Cu(OH)2↓+Na2SO4