2x2﹣x﹣6的一个因式是( )
A:x﹣2
B:2x+1
C:x+3
D:2x﹣3
⑴ ____
⑵ ____
⑶ ____
⑷ ____
⑸ ____
A. The boy is going to the park.
B. Some newspapers are flying away.
C. The balloons are flying away.
D. These boys are playing football.
E. They are going to go to the park tomorrow.
第一位证实电流周围存在着磁场的科学家是()
Do you know the man_______ saved five people in the fire?