分解因式:a3-ab2=( ),3a2-3=( )。
a(a+b)(a-b);3(a+1)(a-1)
.
Jerry said something strange at the meeting. His ______ left me _____ about his real purpose.
A.marks; wondering
B.remarks; wondering
C.remarks; wonder
D.marks; to wonder
下列文字节选自《三国演义》第五十五回:周瑜急急下得船时,岸上军士齐声大叫曰:“周郎妙计安天下,陪了夫人又折兵!”周郎的“妙计”是什么?又为何“陪了夫人又折兵”?请简要叙述。