Answers

2016-03-10T21:19:11+05:30
Because chinaware and glass are delicate substances and will break if it falls. the straw covers the substance and absorbs shocks and any sudden force will not cause the breakage of the glass or chinaware :)
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2016-03-10T21:39:35+05:30
Because it was protect them from any accident if glass were fall it does'nt break because the straw protect them
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