如果某些对象防碍了您选取其他对象，该怎么办？
参考答案：
菜单对象-隐藏-所选对象；对象-显示全部。
—I’m sorry.I can’t catch you.__________
—OK,it’s B-L-A-C-K.
A．Would you please talk slowly?
B．I don’t understand you.
C．Would you please repeat it more slowly?
D．What’s the meaning of this word?
CTCS-3级列控系统基本控车原理？
