题干
____at her success, her parents took her to an expensive restaurant to celebrate.
A：To delight
B：To be delighted
C：Delighted
D：Delighting
答案(点此获取答案解析）
C
A：To delight
B：To be delighted
C：Delighted
D：Delighting
．现高温加热铝粉和氧化铜混合物，使其充分反应．为检验反应后氧化铜是否有剩余，取少量反应后的固体，加入足量稀硫酸，反应后将锌片插入上层溶液中．