某正二价金属元素的氧化物中，金属元素与氧元素的质量比5：2，则该金属元素的相对原子质量为（　　）

A．40

B．56

C．62

D．80

People from England made voyages to conquer other parts of the world and _____ that, English began to

be spoken in many other countries. [ ]

A. because of

B. because

C. since

D. as