下列说法正确的是 [ ]
A、分子是保持物质性质的最小粒子
B、原子是化学变化中的最小粒子
C、物质都是由分子构成的
D、分子可分,原子不可分
答案:B
Fortunately, most of the people ________ the earthquake, though many of the buildings were destroyed. [ ]
A. survived from
B. survived
C. lived from
D. kept alive
开发策略是根据下列______和工作内容而采取的行动方针和工作方法。
A.工作方法
B.工作对象
C.工作效益
D.工作目标