42.3×0.35≈14.81
1.5÷0.45≈3.3
Although her grandma had been ill for a long time, it still came as a shock when she ________ died. [ ]
A. slightly
B. approximately
C. eventually
D. directly
链球菌与葡萄球菌的属间鉴别，可做初步确定的是（）
A.DNA酶试验
B.触酶试验
C.氧化酶试验
D.葡萄糖发酵试验
E.血浆凝固酶试验
