已知关于x的方程2（m+1）x²+4mx+2m-1=0有两个不相等的实数根，

（1）求m的值；

（2）已知x₁，x₂是已知方程的两个实数根，且x₁+x₂=1，试求出m的值．

词汇运用 (共l0小题；每小题l分，计l0分)

小题1:Tsim Sha Tsui is regarded as the _______ center of Hongkong (文化).

小题2:He has ______the book with many pictures in it since two weeks ago. (借)

小题3:I’m afraid you should pay more _______ to your study of English grammar. (关注)

小题4:Are you sure this is a task well _______(在……范围内)your ability?

小题5:Would you please list all the _______ names on the paper?.(邮递员)

小题6:One of the secrets of our success is to believe in ________ (we).

小题7:For ________ information, you can contact Amy on 55560678 (far).

小题8:You have changed a lot and I can feel your _________ (improve).

小题9:It’s ________ for us to finish the work in such a short time. (hope)

小题10:The children all screamed _______ when they saw their favourite Disney characters(excite).