A：The child was addicted to playing computer game
B：The child’s being addicted to playing computer game
C：The child’s being addicted to play computer game
D：The child addicted to playing computer game
16g含氧化铁80%的赤铁矿中含有铁（ ）
全世界希望巴西着重保护的自然环境是（ ）
“王师北定中原日，家祭无忘告乃翁。”这句诗表达诗人什么样的感情？
黄土高原上的传统民居是（ ）
