在“有伤于筋,纵,其若不容”中,“有”之义为()
A."无"之反
B.又
C.复指代甲词
D.更
参考答案:B
------Will you do me a favor and pick me up tonight?
------_________
A. My pleasure.
B. With pleasure .
C.Go ahead.
D. Don't bother.
自由下落的物体,在第ls内、第2s内、第3s内,重力的平均功率之比为
A.1:l:1
B.1:2:3
C.1:3:5
D.1:4:9