There were only a __ number of students in the playground.
A.few
B.little
C.good
D.small
答案:D
量取25mL水,最好选用下列哪种量筒( )
A.10 mL量筒
B.20 mL量筒
C.50 mL量筒
D.100 mL量筒
在过滤、蒸发和配制一定物质的量浓度溶液的实验中都用到的玻璃仪器的是( )
A.铁架台
B.烧杯
C.玻璃棒
D.酒精灯