Some of the larger birds can remain stationary in the air for several minutes.A.

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问题 Some of the larger birds can remain stationary in the air for several minutes.

选项 A.silent
B.seated
C. true
D.motionless

答案D

解析stationary的意思是“静止的、停滞的”,故用motionless “不动的、静止的”替换。如:The bus remained stationary.大客车停着不开。其他选项,silent的意思是“沉默的”,seated的意思是“坐着的”。题干大意是:一些体形大的鸟类能在空中停留好几分钟。
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