Read, then choose the best answer (A,B,C or D) to complete the gap"
The next generation of telephone users will probably laugh (1)______ we explain how we used to stand next to a wall in the kitchen to (2)______ a phone call. Mobile communications, already highly advanced compared with a decade ago, will
completely change communications in the next few years. (3)______ there are millions of people using mobile phones, most people know (4)______ about the mobile telecommunications industry and its technology. There are three types of mobile phone. These are hand portables, pocket-sized hand portables and transportables. The
smallest and most popular are the pocket-sized hand portables. These work on rechargeable batteries, which allow an (5)______ of up to 80 minutes' conversation. Mobiles that are fitted permanently in a vehicle do not (6)______ on separate batteries. They require an external aerial on the vehicle. This can mean a stronger signal with clearer (7)______. Transportation has a high power capability and can be used (8)______ anywhere. They come with powerful battery packs for longer, continuous use and may also be put (9)______ a vehicle, using its electrics. They (10)______ to be bulkier than hand portables.
Trả lời câu hỏi dưới đây:
_________(6)