电气上的“地”的含义不是指大地,而是指电位为零的地方。
参考答案:对
I like music ______. [ ]
A. that have great lyrics
B. that I can dance
C. that I sing along
D. that isn't too loud
2.给你一个数列,但其中缺少一项,要求你仔细观察数列的排列规律,然后从四个选项中选出你认为最合理的一项来填补空缺项。
243,162,108,72,48,()
A.26
B.28
C.30
D.32