被誉为“杂交水稻之父”的我国科学家是
A:钱三强
B:竺可桢
C:袁隆平
D:侯德榜
The lake near our village is _______. It's dangerous to swim in it.
根据句意, 用适当的介词at, about, like, with或 for填空, 完成句子。