Question

【题目】The “Lock-lock” containers _______ good plastic.

A. are made ofB. were made ofC. are made fromD. is made from

Answer 1

【答案】A

【解析】

句意：乐扣乐扣容器是由好的塑料制成的。

be made of是“由……制成的（可以看到原材料）”；be made from是“由……制成的（看不到原材料的），根据常识乐扣乐扣是能看到由塑料制成的，排除C和D，因为这个句子是客观事实，所以要用一般现在时，故答案选A。