题目

 I won’t go to her party        my best friend Jack is invited. A. before                 B. unless               C. if                     D. until 答案：B  如图，AB∥CD，直线EF与AB、CD分别相交于G、H．∠AGE=60°，则∠EHD的度数是（ ）A．30°B．60°C．120°D．150°