Ｉ finally got the job I dreamed about
Ｉ finally got the job I dreamed about.Never in allＩ finally got the job I dreamed about.Never in all my life_____so happy. A did I feel B I felt C I had felt D had I felt
答：首先它是倒装句，排除b和c ,然后是由never in all my life 看出指从以前到现在，应该用完成时，而不是过去时，所以选D。详情>>
问：已知a,b属于R,求证:a^2+b^2>=a*b+a+b-1
答：答案如下： 由（a-1)^2+(b-1)^2>=0 得到a^2+b^2+2>=2(a+b)--------(1) 又由(a+1)^2+(b+1)^2>=2(a+...详情>>
