题干
I tried to call up my relatives in Kyrgyzstan where an unrest(动乱) was going on, but couldn’t _________.
A：go through
B：get over
C：get along
D：get through
答案(点此获取答案解析）
D
的图象经过点
，则该简谐运动的最小正周期
和初相
分别为（ ）