Carl finished reading the article and________the newspaper down on his desk.
A:lay
B:lied
C:laid
D:lain
—________? I don't remember lending you any money.
若3amb2与5a3b2是同类项,则m=____.
下面是一个2×2列联表,则a﹣b的值等于( )
y1
y2
总计
x1
c
a
69
x2
b
d
f
e
65
99
选出对杜甫《春望》赏析有误的一项是( )
春望
国破山河在,城春草木深。感时花溅泪,恨别鸟惊心。
烽火连三月,家书抵万金。白头搔更短,浑欲不胜簪。