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把两个分别标有“10V 10W”和“9V 5.4W”的灯泡串联后接到电源上，要使两灯都不被损坏，则电源的最大电压应为 [ ]

A．10V

B．15V

C．19V

D．25V

答案

答案：B

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阅读下面的短文，并借助上下文和插图补充所缺信息。每个空只能填写一个意义相符、形式正确的单词。并将答案填写在答题卡相应题目的答题位置上。

I have a friend called Kate. She is 小题1:            fourteen-year-old girl. Her family comes from Canada. They all 小题2:              English. Today Kate asked me to her birthday party. I was happy because she often helps me 小题3:           my English. I hope to give her a big surprise. But I didn’t know 小题4:        to bring for her. My mother knew Kate liked dumplings，小题5:        my mother and I made some小题6:        for her. Kate’s friends were in the room when I小题7:          there. She told me she liked the dumplings very 小题8:          . The party started at five and we all said “Happy birthday!” to her. We played games and danced to the music. She asked us to talk in English. Some of them told some jokes. We had a小题9:             time and learned a lot, 小题10:          .
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判断题

建设贷款的还款资金来源，通常是销售收入或长期抵押贷款。（）
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