问题
选择题
宁夏回族自治区现有人口5 615 500人，用科学记数法表示为（ ）
A．56.155×105人
B．5.6155×105人
C．5.6155×106人
D．56.155×106人
答案
5 615 500=5.615 5×106人．故选C．
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宁夏回族自治区现有人口5 615 500人，用科学记数法表示为（ ）
A．56.155×105人
B．5.6155×105人
C．5.6155×106人
D．56.155×106人
5 615 500=5.615 5×106人．故选C．
| 根据短文内容，现在请同学们为高老师填完整他工作日的日程安排表。 | ||||||||||||||||||
| Mr. Gao is a teacher in a middle school. He has a lot of things to do from Monday to Friday. On Monday morning he studies English and On Tuesday morning he has three speaking classes. On Thursday he has two writing classes in the morning and one in the afternoon. He plays ball games after class on Monday and listens to music on Tuesday afternoon. He doesn't have classes on Wednesday or Friday. He works on the computer on Wednesday morning. He can speak a little Japanese. So he has Japanese classes that afternoon. On Friday morning, Mr. Gao meets old friends. In the afternoon, he has a rest at home. | ||||||||||||||||||
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