The methods of communication used during the war were primitive．A:simple B:relia

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问题 The methods of communication used during the war were primitive．

选项 A:simple
B:reliable
C:effective
D:alternative

答案A

解析本句意思：那时在战争时代使用的联络方式是过时的。primitive意思为“原始的，简单的，过时的”，与simple（简单的）意思相近。reliable可靠的，可信赖的；effective有效的；alterna-tive可替代的，可供选择的。

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