因为1800÷2=900,
所以商的末尾是2个0.
故选:B.
Four and half hours of discussion took us up to midnight,and Break for cheese,chocolate and tea with sugar.
A.a;a
B.the; the
C.不填;the
D.a;不填
李商隐《西溪》采用了哪种引发感发的叙写方式()。
A、起兴
B、比喻
C、象征
D、寓托