问题
选择题
Every time Ashtita tries to break a record, he reaches a point ______ he feels he cannot physically do any more.
A．where
B．that
C．when
D．which
答案
答案：A
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Every time Ashtita tries to break a record, he reaches a point ______ he feels he cannot physically do any more.
A．where
B．that
C．when
D．which
答案：A
，忽略粒子重力及阻力的影响。