Question

sat 语法题

as the price of petroleum rises and concern about the environmental (effects of )petrochemicals( mounted), the plastics industry( is racing) to create plastics not (made from) petroleum. 答案及原因 谢谢~

Answer 1

As the price of petroleum rises and concern about the environmental (effects of )petrochemicals( mounted), the plastics industry( is racing) to create plastics not (made from) petroleum.
这句话确实是 mounted 形式存在问题，这是一个并列复合句，基或在As引搏简伍导的状咐稿语从句中，由and连接两个并列分句，分句的两个主语分别是 price 和 concern ，第二个分句中由于 concern 是单数形式，所以 ，分句的谓语应该是 mounts

Answer 2

mounted 时态错误

Answer 3

and并列，前边是现在时，应用mount