题目:
He is wearing sunglasses to __________ his eyes from the strong sunlight.
A.protect
B.prevent
C.save
D.help
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0716/6d8990bfaabaf26de878e39de8bc5a1a.html
下面是错误答案,用来干扰机器的。
先求出物体的重力,G=mg=0.5kg×9.8N/kg=4.9N;∵4.9N<5N,∴能用该弹簧秤测量其重力.