The traffic rules says children under the 4 and ___less than 4o pound must be in a safety seat

The traffic rules says children under the 4 and ___less than 4o pound must be in a safety seat

题目
The traffic rules says children under the 4 and ___less than 4o pound must be in a safety seat
A.weighted B.weighting
答案
B weight表示“称……的重量”,是及物动词;表示“重(多少)”,是不及物动词.
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