建设工程组织流水施工时，相邻专业工作队之间的流水步距不尽相等，但专业工作队数等于施工过程数的流水施工方式是( )。

A．固定节拍流水施工和加快的成倍节拍流水施工

B．加快的成倍节拍流水施工和非节奏流水施工

C．固定节拍流水施工和一般的成倍节拍流水施工

D．一般的成倍节拍流水施工和非节奏流水施工

用所给动词的适当形式填空。

1. Each of us _______ (have ) a nice new bag.

2. _______ (can) he dance when he was five?

3. There _______ (be) some birds and a big apple in the tree.

4. Listen, who _______ (sing) an English song?

5. She _______ (not do) her homework after supper every day.

6. Who _______ (go) to the West Lake with you yesterday?

7. _______ (not speak) loud in class.

8. Where _______ (be) you and she yesterday afternoon?

9. — _______ she ______ (help) you do the homework? — She did.

10. — ______ you _______ (take) a walk now, Lucy? — Yes, I am.