1,applicants must have (qualified)a research degree in Food Technology plus at least four years’ industrial experience
这里我括号括出来的qualified,答案里说是多余的,答案是这么说的“评析：have a research degree in… qualified多余.”
但是我理解“必须已经获得一个在食品科技方面的专业资格“,qualified翻译成”具有……“资格可以嘛?have理解成完成时态可以嘛?
2._____ that the print is well spaced and that the key information is displayed clearly.
A Ensure B Allow C Confirm D Guarantee
正确选项为A.求解释C和D为什么不对呢?