Question

【题目】Things made of plastic are usually _______, but they are _______ to get polluted.

A. cheap; easy B. cheap; easier

C. cheaper; easy D. cheaper; easier

Answer 1

【答案】D

【解析】cheap便宜的；easy 容易的；cheaper更便宜的；easier更容易的。句意：塑料制品通常更便宜，但是他们更容易被污染。结合语境可知选D。