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單項(xiàng)選擇題

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

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

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單項(xiàng)選擇題

That uniform makes the guards look absurd.（）

A.serious
B.ridiculous
C.beautiful
D.impressive

單項(xiàng)選擇題

The symptoms of the disease manifested themselves ten days later.

A.eased
B.appeared
C.improved
D.relieved