I've got the message from Mr. Wang that what he has settled down in Canada.
去掉what
地球自转的周期为（）
⑴Amy ____ A. climbed the Tianshan Mountains yesterday.
⑵Sam ____ B. went to Xinjiang last year.
⑶Lingling ____ C. visited the Tianchi Lake last week.
⑷Daming ____ D. rode a horse last year.
⑸Tom ____ E. went to Beijing last summer holiday.
一年前她有过一场病，从那以后她经常背疼。
若a，b互为相反数，c，d互为倒数，m的绝对值是1，n是有理数且既不是正数也不是负数，则2014a+b+1+m2-（cd）2014+n（a+b+c+d）的值为（ ）
