在电缆型号中，在绝缘层的位置上字母YJ表示聚乙烯绝缘。

Happy Sunday

I have four goldfishes in my room. They are very beautiful. I love them very much. On weekdays, I’m always busy. I must study and do homework and so on, so I have no time to care(照顾) them.

But today is Sunday, I am very free. Then, I start to enjoy my goldfishes. They are colorful, but each has a big mouth, two small eyes and a long tail（尾巴）. I take the food and intend（打算）to feed them. They are very intelligent（聪明）. It seems that they know I will feed them, so they are coming up from everywhere. Everyone is opening up its big mouth and waiting for the delicious food. I am smiling! They look very lovely! Then, I put the food into the tank（水缸）. They are eating it very quickly. I enjoy this process（过程） very much!

Today, I am really happy! What a happy Sunday!

小题1:How many goldfishes are there in the home?

________________________________________________

小题2:Why can not the writer(作者) care the goldfishes on weekdays?

­­­­­­­­­­­­­­­­­­­­­­­­­­­­________________________________________________

小题3:What do the goldfishes look like?

________________________________________________

小题4:When can the writer feed the goldfishes?

________________________________________________

小题5:Does the writer have a good time on Sunday?

下面各组中，两个式子结果相等的是[ ]

A．5²和5+5   

B．0.1×2和0.1²   

C．0.8²和0.8×0.8

在规划研究中，划分近期、中期和远期开发方案优先发展重点的依据，是区域或行业发展的( )。

A．资金和资源的可靠性

B．技术的先进性和适用性

C．时序性和阶段性

D．地区区域条件的优越性

压敏电阻标称电压的选择，在交流回路中应不低于工作电压的（）倍。

A、1.5

B、2

C、2.2

D、2.5

同一构件中相邻纵向受力钢筋的绑扎搭接接头宜相互错开。绑扎搭接接头中钢筋的横向净距不应小于钢筋直径，且不应小于( )mm。

A．25

B．20

C．15

D．10