_____the activities might seem childish, actually they require a lot of strength and determination.

A．Since

B．Although

C．Before

D．If

法律适用的基本原则是（）。

A.以事实为依据，法律为准绳

B.公民在法律面前一律平等

C.实事求是，有错必纠

D.司法机关依法独立行使职权