2017北京)______ birds use their feathers for flight，some of their feathers are for other purposes.
（A）0nce
（B） If
（C） Although
（D） Because
查看解析
参考答案
继续答题：下一题
更多高中英语试题
- 1It was never clear ________ the man hadn9t reported the accident sooner.
- 2The meaning of the word "nice" changed a few times _______ it finally came to include the sense " pleasant".
- 3If you don’t understand something， you may research， study， and talk to other people _______ you figure it out.
- 4Mike was usually so careful _______ this time he made a small mistake.
- 5_______ Li Bai, a great Chinese poet, was born is known to the public, but some won’t accept it.
- 6________ I always felt I would pass the exam，I never thought I would get an
