3 . Mr. Copper ________ a huge amount of money by investing wisely in the past 10 years.

A．accumulated	B．has accumulated
C．had accumulated	D．was accumulating

4 . Directions: Write out the words according to the relevant definitions. The first letter is given to you.
1. s________ a plan that lists all the work you have to do
2. d________ using a system of electronic signals to send or receive information
3. r________ the normal order in which you regularly do things
4. a________ to gain something by your own efforts
5. s________ having a higher level in a school
6. r________ practice (sth.) you are going to do or say; practice (a play, a concert, etc.)
7. i________ a particular example or case of something
8. r________ doing or saying the same thing again once or more than once
9. a________ gradually get more and more of sth. over a period of time
10. d________ careful and hard effort

7 . When students graduate and apply for jobs, they should know the importance of ________(积累) experience rather than focusing on their starting salary. (根据汉语提示单词拼写)