论文部分内容阅读
一、选择题(每小题2分.共26分)1.2是( ). 1(A)一it的相反数(B√4的平方根 二(C)8的立方根 (D)2的算术平方根2.下列计算正确的是( ).(^)x’+T’=2戈。 (B)x。÷百:=x。(0)x。·。=x5 (D)(一x’)。=一』∞3.用科学记数法表示0.00256是( ).(A)2.56×10“ (B)2.56×10。(c)2.56×10
1, multiple choice questions (each small question 2 points. Total 26 points) 1.2 is (). 1 (A) a the opposite of the number of (B√4 square root of two (C) 8 cube root (D) The following calculation is correct. () X '+ T' = 2 Ge. (B) x. ÷ 100: = x. (0) x... = X5 (D) (x '). = A “∞3. In scientific notation 0.00256 is () (A) 2.56 × 10” (B) 2.56 × 10 (c) 2.56 × 10