问题
选择题
One more month，________these baby birds will fly out of their nest.
A．or
B．and
C．but
D．otherwise
答案
答案：B
此题为“祈使句 + and 分句”的一种变形：“名词短语 + and分句”，名词短语表示“条件”，分句表示“结果”。该名词短语补充成从句为：If these baby birds have one more month. (these baby birds will fly out of their nest.)
