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Long Island EventsCrafternoonSaturday, March 30, 2019, 1:00 pm-3:00 pmEmma Clark Library, 120Main StreetSetauket, NY 11733The March “Crafternoon” at Emma Clark Library is a hatching bird pop­up craft. Stop by Saturday, March 30 anytime between 1 pm-3 pm for this free craft! No registration. Welcome all kids. If you have any question, please email kids @ emmaclark.org.Rolling River Day Camp Family DaySaturday, April 13, 2019, 12:00 pm-2:00 pm477 Ocean AvenueEast Rockaway, Oceanside, NY 11518Now is the time to learn more about Camp 2019 Prospective Family Day! Bring your family to Rolling R下列反应中氯气既作氧化剂又作还原剂的是(    ) A.氯气和氢气                            B.氯气和铜 C.用氯气制备漂白粉                      D.氯气溶于亚硫酸溶液