需求收入弹性是指需求量相对收入变化作出的反应程度，即消费者收入增加或减少百分之一所引起对该商品需求量的增加或减少的百分比。一般情况下，下列商品或服务需求收入弹性从大到小排序正确的是
| A．旧货、出国留学、牙膏 | B．大米、服装、茅台酒 |
| C．国外旅游、面包、处理品 | D．高档化妆品、食盐、汽车 |
Either you or one of your students ________ to attend the meeting that is due tomorrow.
| A．are |
| B．is |
| C．have |
| D．be |
I have reached a point in my life ____I am supposed to make decisions of my own.
| A．which |
| B．where |
| C．how |
| D．why |
I like Mr. Minder’s speech. It was clear and the point.
| A．at |
| B．on |
| C．to |
| D．of |
Some people eat with their eyes. They prefer to order whatnice.
| A．looks |
| B．smells |
| C．feels |
| D．tastes |
"Daddy didn't mind what we were doing, as long as we were together, ________ fun."
| A．had |
| B．have |
| C．to have |
| D．having |