She still failed in the exam, she tried her best.
A:though
B:because
C:if
D:or
计算: 48−613+(3+2)(3−2)
100,95,90,____、____、____、____、____……
如图,已知二次函数y1=ax2+bx过(﹣2,4),(﹣4,4)两点.
在测2.5V小灯泡(电阻大约为10Ω左右)额定功率的实验时,小明连接了如图甲所示的电路,其中电源电压为6V。