Question

几个介词的考点~~烦劳各位大哥哥大姐姐叔叔阿姨们了,西~~

1.We had a lecture____chemistry
A.in B on C of D for
chemistry n. 化学 化学性质；化学组成与化学反应
麻烦大哥哥大姐姐叔叔阿姨们给个分析啊,也教教我怎么来做咯

2. Mr.Sharp is not a stranger to us .We’ve met him ____more than one occasion
A.in B at C on D to
拜托了

Answer 1

1. B-on, a lecture on...关于......的课/讲座等
He gave a lecture on physics.
他讲授了一堂物理。
2.C-on， on...occasion是固定搭配on more than one occasion不止一次，on several occasions 好几次

Answer 2

BC