培训教师在课堂上运用手势交流应努力遵循的原则有()。
A.雅观自然
B.保持协调
C.因人制宜
D.多多益善
参考答案:A, B, C
. ----Was everyone here
----No. Some students ______traffic on the way
A.caught
B.was caught in
C.was caught by
D.caught hole of
8, 8, ( ), 24, 60, 180
A.10
B.12
C.14
D.16