题目内容

People have always been_______ about exactly how life on earth began.
A．curiousB．excitedC．anxiousD．careful
A
考查形容词短语。Be curious about对…好奇；be excited about对…兴奋；be anxious about对…焦虑；be careful about对…细心；结合句意可知A正确。句意：人们总是对生命究竟是如何开始的充满好奇。
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