单选题   In the mid 1990s, people started doing business on the Internet. At that time, there were two kinds of companies. First, there were traditional companies. They sold things in stores. Then there were Internet companies. They didn't have a store, and they only sold things on the Net.
    Traditional companies didn't want to lose any business. Quickly they made their own websites and began selling things on the Net. These are the so-called 'brick and click' companies. Many stores are made of brick. And you click on your mouse to buy things with your computer. That's where the name 'brick and click' comes from.
    By the late 1990s, e-business like amazon, com., buy. com., and eBay. com. were in trouble. Their profits (利润) were not very high. Competition was great. Many of these businesses were losing lots of money. In 2000, many e-business went out of business.
    Why are 'brick and click' companies, like Barnes and Noble, Toys RVs and Walmart so successful? First, many customers know and trust their names. Their websites like Walmart. com. are easy to remember. These companies also have lots of experience. They know how to run a successful business.
    In the world of e-commerce, companies are fighting for every dollar and every customer. Will 'brick and click' companies win the war? Only time will tell.

单选题     What did many traditional companies do in the mid 1990s? ______

单选题     What gave Internet companies lots of trouble in the late 1990s? ______

单选题     Which of the following is TRUE according to the passage? ______

单选题     Why does the writer think Walmart, a 'brick and click' company, is successful? ______