Reading comprehension. More and more advertisements appear on the Web. You have to be careful not to be fooled or ticked by the advertisements on the Internet. Something is said to be a bargain . but it isn't always cheap. And some so-called new things just have a new outside. However, shopping online is a kind of fashionable thing today. I love to buy things of daily use, so I often get lots of information about them on websites online. For example, if I want an MP3, I can choose my favorite one, and look for what the users like best, then decide whether to buy it or not. And at the same time, you don't have to go to a shop or walk around in a crowded shopping area, so you don't have to waste much time. The Internet is really useful for shopping, but be careful not to spend too much. Judge the following sentences true (T) or false (F) according to what you read. (     )1．If you see the advertisements on the Web, you should never believe them. (     )2．The advertisements online are sometimes false. (     )3．The underlined word 'bargain' here means something cheap (     )4．The writer often buys things like an MP3 (     )5．If you shop online, you can only buy things with a new outside.