参考资料

xué sheng kě yǐ cóng duō zhǒng cān kǎo zī liào zhōng zuò xuǎn zé

学生可以从多种参考资料中作选择。

Students are able to make a selection from a range of reference materials.

zhòng yào cān kǎo zī liào

重要参考资料

important reference material