题目

计算1.()+(-1)-2.先化简，再求值：  答案： 1.原式=2.化简：原式=    （2分）把代入，原式=   （3分）解析:（1）考查幂和开方。（2）考查平方差公式。 根据下列句子及所给汉语注释，在句子右边的横线上，写出空缺处各单词的正确形式。每空只写一词. 1．Timmy really doesn′t understand why his parents are so       (严格的) ．1．      2．The vote was completed．The teacher       (宣布)the result，          2．      3．This car costs too much．Don’t you have something        (便宜)?      3．      4．When spring comes，the snow         (消失)．                     4．      5．We should learn those      (运动员)team spirit．                     5．      6．This film       (导演)was influenced by Bruce Lee’s early works．      6．       7．They will try their best to protect these        (濒于灭绝的)tigers.       7．       8．The worker showed us how to build the bridge        (安全地)．        8．       9．I’m thinking of     (邀请)them to spend the summer with me in Italy .     9．       10．He is very kind，  ___   (耐心的)and friendly to his students．        10．