(На вопрос 2)A．Он хочет обменить доллары

用恰当的词语填空，完成对话。每空一词。

A: Hi! Jack. Nice to meet you here.

B: Nice to meet you, too.

A: How 1__________ have you been in London?

B: Oh, only a few days. We came four days ago, and I'm sorry to say we have to 2__________ in three days.

A: Is this your first visit?

B: It's my wife's first visit, but I've been here five 3___________ before. I have to come over once a year

    on 4___________.

A: And what do you 5___________ of London?

B: Oh, I think it's a wonderful place. I feel quite at home in London.

下列善治肺胃火盛所致的口舌生疮的实火证类非处方中成药是

A．黄连上清丸

B．清胃黄连丸

C．复方牛黄清胃丸

D．上清丸

E．芩连片

GB/T是（）国家标准的代号。

下列关于矢量图的描述不正确的是______。

A．矢量图任意放大不失真
B．矢量图可用Flash软件编辑
C．矢量图可用Windows XP自带画图软件编辑
D．矢量图可用CorelDRAW软件编辑

暗装吊顶工程的主控项目有哪些？