阅读材料，回答问题。

    1947年5月1日， 我国首个省级自治区——内蒙古自治区在乌兰浩特宣告成立，开辟了中国特色民族发展的新道路。70年来，内蒙古各族人民在党的民族政策指引下，在其他兄弟省市的帮助下，各项事业蓬勃发展。

    No one knows what our life will be like in the future. Here are some children's  1.

    Cindy: In the future, people will have more holidays. They2a lot of time to travel around the world. Maybe some families will go to the moon  3 their holidays.

    Gary: I think the earth will be more crowded and polluted. Maybe some people will 4  their houses on other planets.

    Sarah: Students in the future won't need to go to school and they will study at home. What will happen  5 students have problems with a subject? They will  6with a teacher through videoconferencing (视频会议).

    Peter: In the future, people will speak fewer languages. Maybe there will be  7one language in the world. And it will be much  8 for people to talk with each other.

    Laura: Robots will play an important role in our life. 9will help humans do all kinds of work.

    These predictions may seem impossible today, but I10 they will come true one day because we never know what will happen in the future.

下列能正确表示高等动物胚胎发育顺序的是（ ）

已知函数f（x）=sin（x+2φ）﹣2sinφcos（x+φ），则$f\left(\frac{\mathrm{\pi }}{4}\right)$=____