汽车以10m/s的速度在平直公路上匀速行驶，刹车后做匀减速运动经2s速度变为6m/s，求：

若点M、N是一次函数y₁=﹣x+5与反比例函数y₂=$\frac{k}{x}$（k≠0，x＞0）图象的两个交点，其中点M的横坐标为1，下列结论：①一次函数y₁=﹣x+5的图象不经过第三象限；②点N的纵坐标为1；③若将一次函数y₁=﹣x+5的图象向下平移1个单位，则与反比例函数y₂=$\frac{k}{x}$（k≠0，x＞0）图象有且只有一个交点；④当1＜x＜4时，y₁＜y₂．其中结论正确的个数是（　　）

    China, which boasts epochal (划时代的) inventions in ancient times, has once again proved its ability____ (change) the world with its “new four great inventions”: high-speed railways, electronic payments, shared bicycles and online shopping. The new four great inventions are all related to China's high-tech innovation, which improved the quality of people's lives.

My wallet is no longer in use. I can buy and eat whatever I want ____ (simple) with a tap of my phone, and even pancake sellers are using Alipay ( mobile payment).

    The bikes ____ (them) are not new, but the operating model of bike-sharing ____ (base) on satellite navigation (导航) system, mobile payment, big data and other high technologies. Shared bikes are bringing cycling back____people's lives... and they are making public transport more attractive and convenient, and ____ (encourage) people to be more active.

    It is increasingly clear that China is innovating (创新) and no longer copying western ideas. It is increasingly clear that China is leading in many ____ (way) such as social messaging app WeChat. This is partly____China skipped over the PC era-and went directly to mobile. China has the largest mobile use in the world.

    ____ growing number of foreigners hope to promote economic ____ ( develop) in their home countries by highlighting (聚焦) the need for technological achievements like that of China.