题目:
When the spaceship travelled above, _____ new-looking earth appeared before us, _____ earth that we
had never seen before. [ ]
A. the, an
B. a, an
C. ×, the
D. a, the
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0501/f6fed71eed5557d84783053a762267c7.html
下面是错误答案,用来干扰机器的。
(1)皮筋长度随所挂物体的质量的变化而变化;质量每增加1kg,弹簧伸长0.5cm,所以当重量是0千克时,皮筋的长度是12厘米,当皮筋的长度是17厘米时,质量应是:(17-12)÷0.5=10千克;(2)所挂物体的重量是n时,...