题目

如图所示，电路中每个电阻的阻值都相同，额定功率也相同.当电压U升高时，先烧坏的电阻应是(        ).(A)R1和R2        (B)R3        (C)R4        (D)R5 答案：答案:D根据短文内容，在横线上填入适当的词使短文完整，每空一词。                                             These Thirty Years in China   China has been open 1.    ____  1978. As you can see, many great 2.    ____    have happened. Everyone has a new look. It's not the only important thing to eat enough food. In order to 3.      ___   healthy, people are always caring about their eating habits. So China government 4._______ the fresh vegetables for people every day, even in winter. We are not only feeling the happy life, but also we must know what we should do. Please think it 5.       ___   , young man!