Evidence obtained from observation and experiment is often used to _____ a scientific theory.
#4841
A
confirm
B
confine
C
conform
D
conceive
推荐题目
I prefer _______ to __________ in my spare time.
#4699
A
singing… dancing
B
sing… dance
C
to sing... dance
D
to sing…dancing
—Are you sure Mike will help us if we are in trouble? — _____. He is a reliable friend.
#4595
A
It doesn’t matter
B
Don’t take it to heart
C
You can count on it
D
No problem
He was busy writing a story, only ______ once in a while to smoke a cigarette.
#4946
A
to stop
B
stopping
C
to have stopped
D
having stopped
Does it make any difference __________ he refuses or accepts the invitation?
#59049
A
whether
B
which
C
if
D
that