问题
选择题
数据0.00002600000用科学记数法表示为2.6×10n,则n的值是( )
A.-2
B.-3
C.-4
D.-5
答案
0.000 026 000 00=2.6×10-5,∴n=-5.
故选D.
数据0.00002600000用科学记数法表示为2.6×10n,则n的值是( )
A.-2
B.-3
C.-4
D.-5
0.000 026 000 00=2.6×10-5,∴n=-5.
故选D.
假如你叫李明,最近你和你父母就”周末学生该不该与同学外出活动”进行了讨论。 现在请你以Should teenagers go out with their friends on weekends? 为题,参照表内所提供的信息,写一篇英语短文.
注意: 1.开头部分已写好,你只需接着写. 2.所写内容必须包括表格中他们的想法和你的至少三个想法. 3.词数:70个左右. Should teenagers go out with their friends on weekends? Recently I’ve had a discussion with my parents about whether teenagers should go out with their friends on weekends. ___________________________________________________________________________________________________ ___________________________________________________________ |