下列省区中，一年中昼夜时差最小的省级行政区是（   ）

如图显示的是东半球中的北半球区域，读图回答

在图中③示意的航线上，要经过的海域是（ ）

正方体$ABCD-A_1{B}_1{C}_1{D}_1$的棱长为1，线段$B_1{D}_1$上有两个动点$E,F$，且$EF=\frac{\sqrt{2}}{2}$，则下列结论中错误的是(     )

完形填空

    Each morning during fifteen- minute bath, I determined to cultivate a b+添加知识点ig, happy smile. I found out it had to be an honest-to-goodness smile from down deep 1 , an outward expression of happiness from within!

        Let's see how the smile muscles 2 me during the day. I would think of the things I had to be 3 for, work up a big smile and then enter. It 4 people when I passed them on the street to give them a 5 smile. Give every living soul you meet the best smile you have 6 smiled in your life, and see how much better you feel and look. It's one of the best ways to 7 worrying, and start living. When I began to do this, I found I became more welcome everywhere.