Last winter, many places of southern China were struck by heavy snowstorms, _____ more than 120 people were killed.

A．from which

B．in which

C．at which

D．for which

关于学习策略的说法，正确的是（）。

A、学习策略是可教的。

B、培养大学生的学习策略可以从教与学两个方面考虑。

C、学习策略的运用具有高低水平之分。

D、机械的背诵和朗读属于高级的学习策略。