一、单项选择
( )1. —In my opinion, not all inventions were invented by ______accident.
—Well, you do seem to have ______point. Inventing needs much time and hard work.
A. an; a B. an; the
C. /; a D. /; the
( )2. (2017东营) Nowadays some ______made in China are both good and cheap, such as Xiaomi mobile phones, Haier fridges and Lenovo computers.
A. tools B. products
C. materials D. instruments
