奇脉常见于下列疾病()
A.冠心病
B.心肌炎
C.心肌病
D.心包腔积液
E.缩窄性心包炎
参考答案:D, E
We have read for an hour. Now let's stop ____a rest. [ ]
A. had
B. have
C. to have
D. having
A.推广使用以氢氧燃料电池提供动力的客车
B.综合利用石化能源
C.在田野里大量焚烧桔杆
D.随手关闭电源开关,关紧水龙头