--- Our new house was completely in_______ mess after the party was over.

--- Don’t worry. We can clean it by_______ means of our robot.

A．a; /

B．the; the

C．the; /

D．a; the

下列关于产业内贸易结果的说法错误的是（）。

A.产业内贸易结果与产业间贸易结果一样

B.产业内贸易能够满足消费者的多样性偏好

C.产业内贸易能够实现规模经济

D.产业内贸易可以同时给消费者和生产者带来好处