随年龄增长，心脏的变化有（）
A.重量增加
B.排出量减少
C.信指数增加
D.心肌收缩期缩短
E.收缩力减弱
参考答案：A, B, E
—May I take the magazine out of the reading room?
—No, you can't. You _______ read it here. It's the rule. [ ]
A. must
B. would
C. may
D. might
出现基底细胞液化变性的疾病是
A．多形红斑B．白斑C．扁平苔藓D．类天疱疮E．慢性唇炎
