属于结缔组织病(胶原病)的疾病是
A.重症肌无力B.多发性肌炎C.甲亢D.2型糖尿病E.恶性贫血
参考答案:B
______ is my brother, and ______ are my parents.[ ]
A These this
B This that
C This these
不合格品不一定是废品,返修后的产品不一定是合格品。