试题题干
"The brain finds it best to keep smell receptors available for unfamiliar and emergency signals such as the smell of smoke."中真正的宾语是( )。
参考答案
正确答案:
试题解析
句意:大脑发现,最好让嗅觉感受器对不熟悉的、紧急的信号,如烟味,保持有效。
题干中句子中真正的宾语是to keep smell receptors available for unfamiliar and emergency signals such as the smell of smoke。
故本题选D。