题干
I had a________experience yesterday.The brake of my electrical bike failed and I was very________then.
A：terrifying；terrified
B：terrifying；terrifying
C：terrified；terrified
D：terrified；terrifying
答案(点此获取答案解析）
A
、斥力
及引力与斥力的合力F随分子间距离
的变化情况，下列说法中正确的是（）