题型：问答题 简答题 根据短文内容，判断句子对(√)错(×)。My Brother I have a brother. He is a boy. He sleeps a lot (许多). He eats a lot. He cries (哭) a lot. He sits on Mum's lap (膝部) a lot.( ) 1. I have a sister.( ) 2. He sleeps a lot.( ) 3. He doesn't cry.( ) 4. He sits on Mum's lap. 查看答案
题型：问答题 简答题 臭氧为强氧化剂，对多种物品有损坏，浓度越高对物品损害越重，可使A．铜片出现绿色锈斑B．橡胶老化，变色，弹性降低，以致变脆、断裂C．使织物漂白褪色D．使不锈钢断裂E．使塑料老化 查看答案
I have a brother.
He is a boy.
He sleeps a lot (许多).
He eats a lot.
He cries (哭) a lot.
He sits on Mum's lap (膝部) a lot.