Read and write. (根据答句写问句)  

1. A: ______________________________________

    B: My birthday is in February.

2. A: ______________________________________

    B: It's October 1st.

3. A:_______________________________________

    B: I'm sending an e-card.

4. A: ______________________________________

    B: I play football at 3:30 in the afternoon.

5. A: ______________________________________

    B: Hold on, please. Mom, it's your phone call..

关于引起离心泵轴承发热的原因，下列说法错误的是（）。

A.泵轴和电机轴不同心

B.润滑油含杂质或变质

C.轴承滚珠破碎

D.轴面推力较小