问题
选择题
After Helen got the stick from Tom, he___________.[ ]
A. passes on it
B.passes it on
C. passed on it
D.passed it on
答案
答案：D
搜题请搜索小程序“爱下问搜题”
After Helen got the stick from Tom, he___________.[ ]
A. passes on it
B.passes it on
C. passed on it
D.passed it on
答案：D
.则当阳光与水平面成37°角时，杆AB在水下的影长为_________ m.