Radium salts, which have been found to _____ in bones, give rise to cancers of the bone.
#84281
A
pile up
B
build up
C
keep up
D
pull up
推荐题目
When the manager goes out for vacation, he always leaves his secretary_______ the factory.
#71295
A
in the charge of
B
in charge of
C
in charge
D
in the charge
If he did not know them，he would greet them with a few words about weather，but if he did，he would ask about their families or make jokes，always cutting his cloth ______his customers.
#82513
A
according to
B
due to
C
instead of
D
up to
Once a decision has been made，all of us should ________ it.
#65804
A
direct to
B
stick to
C
lead to
D
refer to
Although we have only met ______, I find we have a lot in common.
#64812
A
from time to time
B
in time
C
by chance
D
over and over again
Many a woman______ important positions in society, which________impossible in the past．
#71214
A
holds; was
B
hold ; were
C
held; was
D
holding; were