Adam: Mmm….. This is the best pudding I've ever had!
Celia:________ I know you'd like it.
A、Didn't't I tell you?
B、Did I say it right?
C、Is what I said right?
D、What did I say?
第1题：
—Why didn't you go to the cinema yesterday?
—I______, but my daughter returned from America the moment I was leaving.
A. did
B. would
C. was going to
D. had
16．答案为C “你昨晚为什么不去电影院?”“我本打算去，但是我正要离开时我女儿从美国回来了。”该句用过去将来时表示过去打算做某事。
第2题：
-- Ann is in hospital.
-- Oh, really? I __ know. I __ go and visit her.
A. didn’t; am going to B. don’t; would
C. don’t; will D. didn't; will
第3题：
B 宽度优先（种子染色法）
5．关键路径
几个定义： 顶点1为源点，n为汇点。
a. 顶点事件最早发生时间Ve[j], Ve [j] = max{ Ve [j] + w[I,j] },其中Ve (1) = 0;
b. 顶点事件最晚发生时间 Vl[j], Vl [j] = min{ Vl[j] – w[I,j] },其中 Vl(n) = Ve(n);
c. 边活动最早开始时间 Ee[I], 若边I由<j,k>表示，则Ee[I] = Ve[j];
d. 边活动最晚开始时间 El[I], 若边I由<j,k>表示，则El[I] = Vl[k] – w[j,k];
若 Ee[j] = El[j] ，则活动j为关键活动，由关键活动组成的路径为关键路径。
求解方法：
a. 从源点起topsort,判断是否有回路并计算Ve;
第4题：
____ I?know,?there?isn’t?such?a?word?in?English.
A、As much as
B、So far as
C、As long as
D、As soon as
第5题：
What can I do for you, Madam?
()500yuan in cash to my son in Beijing University.
A、 You’d better remit
B、 I'd like to remit
C、 I'd rather remit
第6题：
Kathy, I’d like you to meet Maggie Jacobs.
(). Maggie. You’re doing a great job.
A、 I‘m pleased to meet you
B、 It’s great to see you again
C、 I' m happy to meet you too
第7题：
A.ask
B.made
C.let
D.had
第8题：
I _____my breakfast at 8, but_____ I lunch yet. .
A. had, haven't had
B. had, didn't have
C. have had, didn't have
第9题：
乳牙萌出的顺序为
A．I→Ⅱ→Ⅳ→Ⅲ→V
B．I→Ⅱ→Ⅲ→]V→V
C．I→Ⅲ→Ⅱ→Ⅳ→V
D．Ⅱ→I→Ⅲ→Ⅳ→V
E．Ⅱ→I→Ⅳ→Ⅲ→V