下列关于纬线的说法，正确的是（    ）

如图所示，在火车站或高铁站，人必须站在安全线以外的区域候车．这是因为列车驶过时，安全线内侧的空气流速比安全线外侧的空气流速____，压强____，如果人站在安全线以内，即使与车辆保持一定的距离，也是非常危险的．

完形填空

　　Today is Sunday. Mike and Peter 1 go to school. Listen! They are talking about the life  2 in the room." 3 will the world be like? "Peter asks."I think that the world will be a 4  place to live in. And we will 5 machines and robots at home. They will help us do lots of 6  , "says Mike. "The robots will help  7 cook dinner, clean the houses and  8 old people. I think there will be a kind of medicine(药)  9  it can make us live more than 100 years, "Peter says."What will you do then? "says Mike."Then I will  10  my great-grandchildren(曾孙)to the moon, "says Peter. "The moon? I will go to the Mars(火星)with my wife, "says Mike.

如图中，日期相同的是（大圆表示赤道，小圆表示极圈，箭头表示自转方向）（　　）