比较不同通讯方式的利与弊 — 英语选择题
题目
哪句话正确比较了不同通讯方式的利与弊？
A. A video call is faster than a letter, but it needs the Internet.
B. A letter is faster than a video call, but it needs the Internet.
C. An email is slower than a letter, and it is always more expensive.
D. A phone call is slower than a letter, and it does not need a phone.