题目

You can buy almost everything the Internet, and it’s very easy.A. into B. for C. at D. on 答案：【答案】D【解析】试题句意：在网上你几乎可以买到所有东西。而且非常简单。A. into进入；B. for为……；C. at在某时间点或地点；D. on在……上。在网上，通过网络：on the Internet。故选D。 He built a telescope ______ he could study the skies． [　　] A．through that　　　B．through it C．through what　　　D．through which