下列哪个部位测量体温所得到的结果,最接近人体温度[ ]
A.直肠
B.口腔
C.腋窝
D.体表
答案:A
如图所示,将废旧灯泡的灯丝接入电路,给灯丝缓慢加热,电流表示数变小,小灯泡亮度将 _________ ,这一现象说明 _________ .
They peasants did what they____ the crops, but failed.
A.could save
B.could saving
C.could to save
D.could saved