当x=______时,代数式5x-1与3x+2的值相等.
依题意有5x-1=3x+2,
移项,得5x-3x=2+1,
合并同类项,得2x=3,
化系数为1,得x=32.
Drivers who park their cars illegally, _____ preventing traffic flow should be punished.[ ]
A. casually
B. carelessly
C. unluckily
D. particularly
关于支原体的生物学性状,下述哪些是正确的( )
A.无细胞壁
B.多形态性
C.能通过滤菌器
D.细胞膜中胆固醇含量高