Shakespeare, who devoted himself to writing novels, plays and poems, ____ (consider) to be the greatest writer in the English language, even today.
下面哪一组单位属于国际单位制中的基本单位( )
有一具复式光学显微镜配置有10倍目镜及4、16、40、100倍的物镜,若以4倍物镜来观察物体,则下列叙述,哪一项正确 ( )
太阳大气层的最里层及其主要太阳活动是( )