国际收支平衡表是一个国家对一定时期(如一年、半年或一个季度)内，该国与他国居民之间所进行的一些经济活动进行系统记录的统计表，按( )原理编制。
A．单页登记
B．复式簿记
C．单式簿记
D．复页登记
参考答案：B
解析： 国际收支平衡表是一个国家对一定时期(如一年、半年或一个季度)内，该国与他国居民之间所进行的一些经济活动进行系统记录的统计表，按复式簿记原理编制。
Do you often feel tired or hard to concentrate(集中精力) in class ? If your answers to this question is yes, 小题1: . .Not getting enough sleep can lead to many kinds of problems. New studies show that not only Chinese students suffers from lack(不足) of sleep，American students also have the same problem . 小题2: Why are they so tired ? One big reason is the use of electronic products（电子产品）. A recent survey finds out that 71% of American kids aged 8 to 18 have TVs in the rooms and about 36% have computers in their rooms. 小题3: , playing video games ,sending text messages to friends and watching TV before bedtime. How to solve the problem ? Scientist advise “ 小题4: . ”Spending more time on sleep can help students stay healthy 小题5: 根据以上内容，从下 * * 个选项中选择适当的句子还原到短文中，使短文完整与正确。将其标号在答题卡上涂黑。（每小题2分，共10分）
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