—What would you do if you had your fingers ______?

—If I _______ you. I should ask the first-aid.

A．burn; were

B．cut; was

C．hurt; am

D．injured; were

家在黑龙江哈尔滨的小明，每天北京时间7点就上班了；而在新疆乌鲁木齐的小强，每天北京时间10点后才开始上学，这主要是因为

A．纬度位置差异

B．经度位置差异

C．习惯不同

D．学校制度不同