Nuclear energy may be dangerous if                          
#94118
A
controls
B
not controlling
C
not controlled
D
controlled
推荐题目
There are five chairs ___ ,but I am at a loss which to buy .
#96991
A
to be chosen
B
to choose from
C
to choose
D
to be chosen from
.He went to American _____some English as well as ____.
#97573
A
learning ,to travel
B
learning, traveling
C
to learn, travel
D
to learn ,to travel
 He was reading his book, completely _______ to the world. 
#98437
A
lost
B
losing
C
to lose
D
to have lost