王玲有4.50元钱,买一本1.05元的连环画和一盒2.95元的颜料,还剩多少元?
4.50-(1.05+2.95)
=4.50-4
=0.5(元),
答:还剩下0.5元.
The patient's legs were so weak and he could stand_______. [ ]
A. sometimes
B. hardly
C. often
D. ever
根据GB3323《钢熔化焊对接接头射线照相和质量分级》的规定,焊缝质量以()为最好。
A.I级
B.Ⅱ级
C.Ⅲ级
D.Ⅳ级