If we_________ sunlight_________ a dry leaf with a piece of glass, it may start burning.
#70485
A
work; out
B
carry; out
C
focus; on
D
concentrate; on
推荐题目
The mother used to ________her son’s pockets while he was asleep, looking for letters from his girlfriend.
#76793
A
pick out
B
go through
C
deal with
D
look into
Evidence gained from observation and experiment is often used to _______ a scientific theory.
#65501
A
concern
B
confirm
C
consult
D
combine
It was unwise of him to _________ the unreliable data in his speech.
#74921
A
refer to
B
add to
C
belong to
D
point to
Armed police and railway workers were removing snow from the track to _______ a train stuck near Jining in Inner Mongolia.
#76902
A
recover
B
free
C
protect
D
clear