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Some of the larger birds can remain stationary in the air for several minutes.
A:motionless
B:silent
C:seated
D:true
B:silent
C:seated
D:true
参考答案
参考解析
解析：本句意思：一些大型鸟类能够在空中静止好几分钟。stationary不动的，静止的，固定的，不可移动的。motionless一动不动的，静止的；silent沉默的，缄默的；seated落座的；true符合事实的，确实的，如实的。
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