幼儿期是指( )
A．从出生断脐到生后满28天B．出生28天后到满1周岁C．1～3岁D．3～7岁E．7～12岁
参考答案：C
Fortunately, the illness is fully treatable if _____ within ten days.
A．being found
B．find
C．to be found
D．found
当k＞0时，函数f（x）的图象向 ______平移 ______个单位得到函数y=f（x+k）的图象．
