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 __61__(easy) than before. We can just click our mouse to choose the items we like, pay for them online, and the shopping __62__(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 __63__ to buy. However, there are always traps in shopping online. If we are ___64___(care), we may get into trouble. For example, we may find the color of the item different from ___65___ 土壤肥力高低的重要标志是　　　　　　　　　　　　　　　　　　　　　　 (　　  ) A.矿物颗粒的大小　　　　　　　　　　　　　　　　　　　　　　　　 B.透水能力大小 C.透气状况　　　　　　　　　　　　　　　　　　　　　　　　　　 D.有机质含量多少