单项选择题

Don Cameron's interest in flying______.

A．began when he was very young
B．began at university
C．came from a with to imitate his grandfather
D．was the result of his professional experience
<上一题 目录 下一题>
热门 试题

单项选择题
What determines the price of a good in a market economy
A．The cost of all elements in production.
B．The cost of not making other goods.
C．The efficiency of the manufacturing process.
D．The quantity of materials supplied.
单项选择题
He began working with balloons______.
A．as a relaxation from his work on aircraft
B．as part of his job at the time
C．as a hobby
D．when he heard that some Americans had crossed the Atlantic in one
相关试题