A．太阳核心利用核裂变释放能量
B．核电站利用核聚变获取能量
C．原子弹利用核裂变释放能量
D．氢弹利用核裂变释放能量
答案：C
Is this_________________?[ ]
A. gold your ring
B. your gold ring
C. your ring gold
D. you gold ring
His company went（）after he failed in the business.
A.decent
B.negative
C.bankrupt
D.acute
