填空题____
填空题
____
参考解析
解析：
based。考点:动词。空格后的句子为定语从句，用来修饰“languages”，be based on“根据”，这里省略be，补充完整为which are based on…。这句话意为“其他的研究者也教过猩猩使用复杂的“语言”，这些语言是基于彩色的图形或电脑键盘”。
based。考点:动词。空格后的句子为定语从句，用来修饰“languages”，be based on“根据”，这里省略be，补充完整为which are based on…。这句话意为“其他的研究者也教过猩猩使用复杂的“语言”，这些语言是基于彩色的图形或电脑键盘”。
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