若$M=\left\{3,5,6,8\right\},N=\left\{4,5,7,8\right\}$，则$M\cap N=$（    ）

①我们应该告诉员工怎样参与创新，在哪个阶段参与到创新的过程中，问他们对于改进产品的想法、过程和工作流程，使他们与管理层保持________的沟通。

②如果有分手或失恋带来的苦楚，你可以找人________地诉说，比如找心理医生咨询或向最信任的挚友倾诉。

③他们不但是合伙人，更有着________、荣辱与共的亲密关系。改革开放后，他们共同办企业，更加志同道合，许多事情都能心照不宣，配合默契。

    To save time, many Americans buy foods which can be quickly made ready for the table. On holidays, families enjoy delicious meals. For example, on Thanksgiving Day, the fourth Thursday in November, family members get together for a turkey dinner with pumpkin pie(南瓜派).

    People can easily find fast food chains(连锁店),such as McDonalds' and KFC, in most of the big cities in the world.

    These years, many people have taken more and more care of their health while eating. They come to know eating too much meat will make them overweight. Many of them are also worried about food addictives(添加剂). Some of them may be harmful to the body.