某工程双代号网络计划如右图所示,图中已标出每项工作的最早开始时间和最迟开始时间,该计划表明()。
A. 工作1-6的自由时差为2
B. 工作2-3的自由时差为1
C. 工作2-5的自由时差为0
D. 工作4-7的自由时差为1
【C3】
A. Consequently
B. In contrast
C. However
D. Besides
In the sentence "A person who has one can get what he wants", the word "one" refers to ______.
A. feature
B. marriage advertisement
C. permit to live abroad
D. Canada or the United States
【C2】
A. describe
B. talk about
C. designate
D. indicate