In order to make students have a good knowledge of science subjects, they are encouraged to______ their own science experiments.
#83509
A
operate
B
direct
C
manage
D
conduct
推荐题目
If the machine should ______, call this number immediately.
#83730
A
break down
B
set out
C
put on
D
go up
The man fell , his hand still ___________.
#74458
A
rose
B
raised
C
risen
D
raising
The committee ___________ nine members.
#67825
A
is consisted of
B
consists of
C
is included
D
is made of