The sky was so clear in fact that the communications crew and recovery team coul

游客2023-09-07  24

问题 The sky was so clear in fact that the communications crew and recovery team could watch the balloon ______ to its maximum altitude with the naked eye.

选项 A、hike
B、elevate
C、escalate
D、ascend

答案 D

解析 语义连贯题。气球的上升是缓慢地、逐渐地,ascend指物体逐渐或继续上升。[A]hike作不及物动词时意为“升起”,尤指从某处升起,如 My coat had hiked up in the back.(我外套后面鼓了起来);[B] elevate指举起或抬起某物;[C]escalate“逐步上升,逐步增强”,不指事物海拔的升高。
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