三羧酸循环中底物水平磷酸化的反应是（） A.柠檬酸→α-同戊二酸 B.琥珀酰CoA→

Imagine this: your parents go away on business, but you have to stay at home alone. Would life be as easy as when your parents are around? Would it be a perfect holiday for you?

“I can fill an empty stomach with tomato and egg soup, but that's all. I think many of my classmates are the same. We wouldn't know what to do, or how to look after ourselves," said Zheng Chenyu. "And I'd forget something important. I'd probably watch television and burn the soup. "

“As soon as I leave home, I'll learn to cook. But now parents do almost everything for us. We’re very lazy, "she said.

Most teenagers have only time for their homework. They don't learn any life skills until they go to college.

However, Sima Yige doesn't think so.

“I think I'd be all right. I wouldn't just eat sandwiches or fruit. I know how to cook, some sim­ple dishes because my mum showed me," the 13 - year - old boy said. In his opinion, many teen­agers depend too much on their parents, and there is much more to learn than cooking, like "tidying up your room or even dressing yourself properly."

For most teenagers it wouldn't be a holiday at all.

小题1:Why would Zheng Chenyu probably burn the soup?

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小题2:When will Zheng Chenyu learn to cook?

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小题3:Translate the underlined sentence "They don't learn any life skills until they go to college. " in this passage.

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小题4:The underlined phrase "depend too much" on in the passage means __________ in Chinese.

小题5:Would life be as easy for teenagers living alone as when their parents are around?

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棚仓搭设立杆的间距一般不大于（）。

A．4m

B．4.5m

C．3.5m

D．3m

根据应用系统的特点和运行需求，通过对网络及网络设备的运行记录、趋势的分析，对网络及网络设备进行调整、扩容或升级。比如硬件容量变化，如网络设备硬件、软件升级、带宽升级等。这种优化改善属于（）

A、设备功能改造

B、适应性改进

C、增强型改进

D、网络升级

居民李某长期从事边境贸易，闪资金周转需要向境外某合作伙伴借款，两个月后归还，则：①该款项汇入时应如何申报？②归还借款时应如何进行申报处理？

简述水利工程项目划分的原则。