The United States has been proved to be laggard in the world, refusing to sign the protocol.
The United States has been proved to be laggard in the world, refusing to sign the protocol.
A、stupid
B、wise
C、rich
D、slow
【正确答案】:D
【名师解析】:题目中提到的单词"laggard"意味着落后或缓慢的。根据语境,美国拒绝签署协议,这表明它在这一领域的发展或行动上是缓慢的。因此,选项D "slow" 是最合适的选项,因为它与"laggard"的含义相符。其他选项A "stupid"、B "wise" 和 C "rich" 并不直接与"laggard"的含义相关联。
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