题干
She was afraid __________ the dog in case it became dangerous.
A：of exciting
B：to excite
C：that she excited
D：to be exciting
答案(点此获取答案解析）
B
A：of exciting
B：to excite
C：that she excited
D：to be exciting
”表示氧原子，下列模型能表示“超临界水”分子的是（ ）
