中国大学MOOC: Which of the following items are not valuables?
                    举一反三
- Which of the following items are not valuables? A: Laptop B: cash C: Portable battery D: jewelry
 - 中国大学MOOC:"Which of the following about phonological items is RIGHT?";
 - 中国大学MOOC: Which of the following items will appear on the E-ticket itinerary?
 - 中国大学MOOC: Which of the following items do not need to be checked?
 - 中国大学MOOC: Which one of the following items is NOT an element of force majeure? ()
 
