—All the isatis root（板蓝根） is sold out!—People are crazy! experts say there is no use eating isatis root to preventH7N9, some people still don’t believe it.
#56593
A
Although
B
Unless
C
As a result
D
In order that
推荐题目
Hurry up. The car is coming. Wait a minute, Don’t cross the street _____the traffic lights are green.
#56861
A
while
B
when
C
until
D
after