The scientific research on how to protect the rare animals is ________. Many scientists are working hard to find new way to raise the animals by man.
#5782
A
in danger
B
in control
C
in order
D
in progress
推荐题目
Ten years had passed. I found she had _______. 
#7234
A
a few white hairs
B
a little white hair
C
some white hair
D
more fifty hair
Dark clouds are a ___of rain while a smile a ____of friendship.
#7583
A
sign; gesture
B
gesture; sign
C
sight; method
D
make; way
Sir, you are not allowed to enter the building unless you get our manager’s__.
#6250
A
permission
B
connection
C
instruction
D
introduction