下表为病毒、细胞及其它结构的大小,分析表格数据,指出原核细胞直径大小范围
A.0.025~0.02μm
B.0.1~2μm
C.1~2μm
D.0.1~数百μm
答案:B
The new secretary is _____ and therefore the manager is satisfied with her work. [ ]
A. effective
B. efficient
C. specific
D. sufficient
30.028读作______,九百八十点零四写作______.