题目

—Would you like to come to the dinner party here on Saturday? —Thank you.I’d like to，________I’ll be out of town at the weekend. A．because                                             B．and   C．so                                                     D．but 答案：D 考查连词。根据句意，空格前后句子之间是转折关系，故选but。2x-28÷2= 4，这个方程的解是A．x=5B．x=9C．x=10D．x=20