若反比例函数$y=\frac{8}{x}$的图象经过点（﹣2，m），则m的值是(    )

根据短文选择正确答案。

The future is coming! All over the world there are many new ideas(想法) for new places to live and work in. Some of them will be in the sea! They will be very big and lots of people will live and work in them. The Americans are planning to build a town called Atlantis City. It will be in the sea，about five miles away from the land. But the most exciting idea comes from Japan. It is called Acropolis. Acropolis will be a huge sea city, with parks, schools, a hospital and an airport. And it will move! It will travel slowly around the world. There are just two problems. Acropolis will cost (花费) a lot of money to make. And for people who get seasick, it won't be much fun.

POS刷卡机的广泛应用给人们的生活带来了便利．POS机刷卡位置有一个饶有线圈的小铁环制成的检测头（如图所示）．在使用时，将带有磁条的信用卡在POS机指定位置刷一下，检测头的线圈中就会产生变化的电流，POS机便可读出磁条上的信息．下图中能反映POS刷卡机读出信息原理的是(       )

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小明参加学校田径队进行短跑训练，王老师为了帮他进一步提高成绩，对他的百米成绩进行了分析测试．在每隔20m处安排了一个计时员，各计时员在发令员鸣枪时起动秒表，跑经指定位置时按停秒表，他们的读数分别是2.9s、5.5s、7.9s、10.7s、12.8s．通过这些数据可知道：

口算：

____×5=15       6×____ =24    ____×4=20

____六十二       五____二十五