多项选择题

齿轮线常用：
A、“几”字型
B、“W”字型
C、“M”字型
D、“Y”字型

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Questions 9 to 12 are based on the conversation you have just heard
A、A) They were beautiful gardens.
B、B) They were heavily populated.
C、C) They were small villages.
D、D) They were skillfully built.

答案： D#我的B#我的答案：A#我的答案：C