Because these speeding particles’ compositions were quite different from those of other low-energy cosmic rays, scientists dubbe

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问题 Because these speeding particles’ compositions were quite different from those of other low-energy cosmic rays, scientists dubbed them______cosmic rays.

选项

答案A,D

解析 Because说明前后同义重复;different from说明前后反义重复。空格与speeding(高速移动的)同义重复,与low-energy(低能的)反义重复。abnormal反常的,transitory短暂的,resilient有复原能力的,anomalous反常的,ephemeral短暂的,intermittent间歇的。答案选AD.
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