单选题With the help of the

问题补充：

单选题Withthehelpoftheforeignexperts,theyproduced___washingmachinesinastheyearbefore.A.as twice manyB.as twice as manyC.as many as twiceD.twice as many

答案：

D解析考察倍数表达法。倍数表达法： 倍数 as adj(原级) as ;本题的many修饰后面的washing machine.故D正确。