国家对传染病防治的方针是（）。
A、预防为主
B、防治结合、分类管理
C、依靠科学、依靠群众
D、以上三项
参考答案：D
Part A You will hear a lecture about shingles, an infectious disease. As you listen, answer Questions 1 to 10 by circling TRUE or FALSE. You will hear the talk ONLY ONCE. You now have 1 minute to read Question 1 to 10.Questions 1 to 10:
It’s easy to find out the cause of reactivation of the virus.
为β-半水硫酸钙的是
A．硼酸+硼砂B．硼酸C．硼酸+硼砂+氟化物D．氯化物E．硼砂十氟化物
