【题目】There are only ________ natural resources as there were thirty years ago.
A.as half muchB.as half manyC.half as muchD.half as many
在线课程【答案】D
【解析】
考查倍数。句意：现在的自然资源只有三十年前的一半。倍数的常见用法有：倍数+as+形容词或副词的原级+as+其他。倍数+形容词（或副词）的比较级+than+其他。倍数+thesize/height/length/width.etc.+of+其他。名词natural resources为可数名词，所以用many修饰。故选D。