该患儿典型心电图改变为
A．左心室肥厚
B．右心室肥厚
C．右心房肥厚
D．不完全右束支传导阻滞
E．预激综合征
参考答案：B
肺痈成痈化脓的病理基础主要在于（）
A.阴伤
B.热毒
C.外邪
D.痰热
E.瘀血
The settlement is home to nearly 1,000 people, many of()left their village homes for a better life in the city.
A. whom
B. them
C. which
D. those
