下列错误的提法是()。
A.总时差最小的工作是关键工作
B.关键线路上不能有虚工作
C.关键线路上工作的总持续时间为最长
D.关键线路上的工作都是关键工作
参考答案:B
根据句意及首字母提示完成句子
1. The sun is s_______ all day.
2. He bought a train ticket with a r_______.
3. It is p_______ for him to work out the problem because he is very clever.
4. There are many clouds in the sky, you'd better take an u_______ with you.
5. The wind is too s_______ for the old man to walk.
6. When is the best time to v_______ your country?
7. What will be the w_______ like?
8. It is p_______ to go to the Great Wall.