红军第五次反”围剿“失利的主要原因是[ ]
A．国民党军事力量强大
B．红军作战指挥有误
C．缺少人民的支援
D．红军主力已经转移
答案：B
为轿车喷涂面漆，厚度为40mm，每辆车表面积为80m2，油漆密度为0.98g/cm3，油漆利用率为50%。试计算每天2班，每班20辆车要使用多少油漆？
The discovery of the connection between aspirin and Reyessyndrome, a rare and deadly ailment, is a recent example of the caution with which drugs must be used, even for medical purposes.
A．disease
B．sick
C．ill
D．illness
