题目

Women ____ drink more than two cups of coffee a day have a greater chance of having heart disease than those ____ don’t.    A. who; 不填      B. who; 不填     C. who;  who      D. 不填；不填 答案：C已知：如图，在矩形ABCD中，DE⊥AC，∠ADE=12∠CDE，那么∠BDC等于（　　）A．60°B．45°C．30°D．22.5°