With the development of our country,close__should be kept in with advanced science and technology.
问题描述：
With the development of our country,close__should be kept in with advanced science and technology.
A.connection
B.touch
C.relation
D.union
为什么选B
答
connection一般用于实体的连接,例句中科学和技术属于抽象名词
relation一般表示某种关系
union一般是指团体
touch本意是接触,感觉.advanced science and technology,就是把尖端科学应用在技术中,抽象的接触,用touch感觉是神来之笔,感觉advanced science 接触（close touch）到technology了,意境颇丰.自己细细品味下.
还有就是Keep in touch本身就是个短语.