题目

How do you usually buy what you need, shopping on line or going out to shop in person? With the help of the Internet, shopping is ___1___(easy) than before. We can just click our mouse to choose the items we like, pay for them online, and the shopping ___2___(finish). It is easy and quick. It helps save money, too. We can save thousands a year if we compare the prices of similar items before deciding ___3___ to buy. However, there are always traps in shopping online. If we are ___4___(care), we may get into trouble. For example, we may find the color of the item different from ___5___边说边笑吃东西，食物容易误入气管，其原因是（　　）A．气流冲击，声门裂开大　　　　B．气流冲击，喉腔扩大C．会厌软骨没能盖住喉的入口　D．环状软骨扩大