从坑口挖出的土方在堆放地方，至少要距离坑口（）米。
A、0.8
B、0.6
C、0.5
D、0.3
参考答案：A
It was ____surprise that my first teacher, already 90, was still living and in _____ good health.
A the, a B ∕, a C a, ∕ D a, the
病毒性心肌炎的治疗原则为（）
A.清热解毒
B.扶正祛邪
C.活血化瘀
D.温振心阳
E.养心固本
