大学英语单项选择题每日一练(2019.12.10)

单项选择题
I have classes（）day：Mondays，Wednesdays，and Fridays.
A.each other
B.every other
C.on one way or another
D.any other
单项选择题
Food alone is not the（）of energy.
A.source
B.resource
C.force
D.grocer
单项选择题
She had clearly no（）of doing any work, although she was very well paid.
A.tendency
B.foundation
C.intention
D.belonging
单项选择题
The swimming pool is so（）that it's safe for small children.
A.stable
B.smooth
C.superficial
D.shallow
单项选择题
He is（）about his chances of winning a gold medal in the Olympics next year.
A.optimistic
B.optional
C.outstanding
D.obvious