题目

小红按某种规律写出4个方程：①；②；③；④.按此规律，第五个方程的两个根为（     ） A.-2、3   B.2、-3   C.-2、-3    D.2、3 答案：CThe newly designed iPhone 5 on the market____________ well now. Get one before it __________out in the shop.A．sells, is soldB．sells, sellsC．is sold, is soldD．is sold, sells