The spectators in the stadium cheered up when they saw hundreds of colorful balloons ______slowly into the sky.

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问题 The spectators in the stadium cheered up when they saw hundreds of colorful balloons ______slowly into the sky.

选项 A、descending
B、ascending
C、escalating
D、elevating

答案B

解析 动词词义辨析。根据句意,此处是balloons慢慢升入sky。ascend作不及物动词时,意为“升高,(渐渐)上升”,正合句意;escalate主要指“(战争等)逐步升级;逐渐扩大;(物价等)迅速上升”;elevate为及物动词,意为“举起,提高,使上升”。故答案为B。
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