单项选择题

Questions 19 to 21 are based on the conversation you have just heard.

A．They are smarter than human workers.
B．They are more productive than human workers.
C．They are very durable.
D．They are easy to design.
<上一题 目录 下一题>
热门 试题

单项选择题
A．Their tricks.B．Their order.C．Their liveliness.D．Their intelligence.
A．Their tricks.
B．Their order.
C．Their liveliness.
D．Their intelligence.
单项选择题
A．They don’t get rid of loose arm.B．They can damage arm muscles.C．They aren’t acceptable to most people.D．They can raise one’s blood pressure.
A．They don’t get rid of loose arm.
B．They can damage arm muscles.
C．They aren’t acceptable to most people.
D．They can raise one’s blood pressure.
相关试题