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1编号:51179题型:单选题测试正确率:92.6%

计算:     .(    )

2编号:51084题型:单选题测试正确率:60.62%

3编号:51083题型:单选题测试正确率:65.45%

4编号:51069题型:单选题测试正确率:63.75%

5编号:51068题型:单选题测试正确率:82.39%

6编号:51011题型:单选题测试正确率:55.16%

(1)计算:设a,b互为相反数,c,d互为倒数,下列代数式的值为(    )

7编号:50988题型:单选题测试正确率:46.11%

8编号:50987题型:单选题测试正确率:69.53%

9编号:50971题型:单选题测试正确率:70.76%

10编号:50970题型:单选题测试正确率:75.59%