He lets us wear his Olympic medal if our class does good on the tests."

VOA: special.2010.04.30

The tests will be written in the normal class period.

测试是要在常规的课堂时间写出来。

麻省理工公开课 - 固态化学导论课程节选

Hargreaves says the first class of drugs could begin clinical tests in humans within the next six months.

VOA: standard.2010.05.04