题目

Though brought up in Los Angeles, Steven Davidson spent his whole life       in New York． A．mostly               B．constantly C．roughly              D．merely 答案：A8．口算题25.8+0.42=0.4×0.004=125$\frac{5}{56}$×8=287+179+-187=999+99+3=（$\frac{1}{50}$-0.02）÷1$\frac{2}{7}$+$\frac{5}{7}$=