67、The purpose of the network layer is to realize the transparent of data between two end systems

243、So it is clear then, that to () a genius is to push the limits, in your mind, and beyond

242、Even the most powerful computer () the world cant be a genius because it has no character.

241、What is genius? Many tests have beercreated to answer this question.

240、What is the main purpose of going online?

239、take sth away是带走某物

238、inside address是

237、millions of是百万

236、adjust oneself to a new surrounding

235、有些结构也常要求用V-ing短语。

234、with the increase of sth