B型香料烟A2的长充分别为≤（）cm。
A、14
B、18
C、20
D、10
参考答案：A
“指南针”现象说明了什么？
Passage TwoQuestions 29 to 31 are based on the passage you have just heard.
A．They often ride a motorcycle.
B．They used to ride a horse.
C．They work in the mountains of Canada.
D．They ride a horse.
