问题
选择题
When does the next train _____?
A．pull up
B．pull down
C．pull out
D．pull in
答案
答案：C
分析： pull out v.拔出，离开；pull up v.拔起，停下；pull down v.摧毁，推翻，使降低；pull in v.进站，靠岸
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When does the next train _____?
A．pull up
B．pull down
C．pull out
D．pull in
答案：C
分析： pull out v.拔出，离开；pull up v.拔起，停下；pull down v.摧毁，推翻，使降低；pull in v.进站，靠岸