下列运算正确的是( )
A:x4·x3=x12
B:(x3)4=x7
C:x4÷x3=x(x≠0)
D:x4+x4=x8
判断对错。
八年级(1)班的张同学在班上丢了东西,请班长帮忙寻找,班长怀疑是本班同学所为,在查无实据的情况下,让同学们投票选“小偷”。这种做法( )
The patient recovered from the illness________and three weeks later, he left the hospital.