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    The computers changed our lives in the 1980s, the Internet changed our lives in the 1990s, and the robots will change our lives in the new century.

    Do you think there will be robots in people's homes? It's not a dream that every home will have a robot.

    Now, robots are not only able to help people do the housework, they can also help the doctors do the difficult operations, play chess with people, play the piano and so on.

    A new cooking robot is used in Beijing. It can cook all the dishes on the menu; you only need to wait two to four minutes. In the future, the robot will be a nurse, a security (安全）guard, or a partner in your life.

    Experts believe robots will be used everywhere from the industrial (工业的） robots to service robots. In the future, robots will become part of the family, and provide close service for people. We all look forward to the new robot age.

观察下列事实：|x|+|y|=1的不同整数解(x,y)的个数为4 ，|x|+|y|=2的不同整数解(x,y)的个数为8，|x|+|y|=3的不同整数解(x,y)的个数为12，……，则|x|+|y|=10的不同整数解(x,y)的个数为（ ）

在均匀介质中坐标原点O处有一波源做简谐运动，其表达式为 $y=5\sin (\frac{\pi }{2}t)$ ，它在介质中形成的简谐横波沿x轴正方向传播，某时刻波刚好传播到x=12m处，波形图像如图所示，则（）

新年前夕，******发表了2017年新年贺词，贺词中，主席提到：“‘新故相推，日生不滞。’即将到来的2017年，***将召开第十九次全国代表大会，全面建成小康社会、全面深化改革、全面依法治国、全面从严治党要继续发力。天上不会掉馅饼，努力奋斗才能梦想成真。”“上下同欲者胜。只要我们13亿多人民和衷共济，只要我们党永远同人民站在一起，大家撸起袖子加油干，我们就一定能够走好我们这一代人的长征路。”

“大家撸起袖子加油干”迅速走红网络，成为2017年的“金句”。

结合上述材料，运用所学知识，思考下列问题：