Ⅰ. 根据英文释义写出正确的单词
1. the pointed top of a mountain peak
2. to tell the public about a product advertise
3. to make sth. become better or more successful boost
4. to buy sth. purchase
5. (something) worth remembering memorable
6. to pay the costs of a particular event, programme, etc. as a way of advertising sponsor
7. an amount of money that is taken off the usual cost of sth. discount
8. to make sb. laugh or smile amuse
9. a band of radio waves used for broadcasting television channel
10. the scientific study of the mind and how it influences behaviour psychology
