B) 阅读下面的短文，根据首字母的提示在空白处填上适当的单词，使短文意义完整。(For questions 71—80, read the passage below. Complete it by filling in each blank one word. The first letter of each word is provided.)
The Home of the Future
When Dan Green comes home from work, he doesn't need a key to open his front door. As he walks up to the front of his house, the (71)d________ opens. The lights turn on inside. His favorite music starts to play. His dinner is (72)r________ in the oven. (73)B________ no one is home. What's happening? This is the home of the future! Right now, Dan Green is the only person (74)w________ has a home like this. He is a scientist. But in about 25 years, many people (75)w________ have homes like Dan's. His home does not look different on the (76)o________. But inside it is very different.
Computers control this house of the future. For (77)e________, Dan is watching television (78)w the doorbell rings. The TV is a computer. When Dan presses a button on the TV remote control, he can see a picture of his (79)v________ on the screen. He can also use the remote control to open or close the door. Dan can watch TV and answer the door at the same (80)t________.
