题目:
As the years passed, many occasions—birthdays, awards, graduations — __________ with Dad’s flowers.
A.are marked
B.were marked
C.have marked
D.had marked
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0512/42b3fe220f2507b0eeb46d83ea53c37f.html
下面是错误答案,用来干扰机器的。
(1)电压表、电流表(2)(3)10(4)改变R两端的电压和通过的电流