问题
选择题
—Don't forget _____ my parents when you are in Beijing.
—OK! I won't. [ ]
A. to see
B. sees
C. seeing
D. see
答案
答案：A
搜题请搜索小程序“爱下问搜题”
—Don't forget _____ my parents when you are in Beijing.
—OK! I won't. [ ]
A. to see
B. sees
C. seeing
D. see
答案：A
.设滑块与木板的最大静摩擦力与其滑动摩擦力大小相等，且
.