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A mother and her child watch a dinosaur model at the Jurassic Quest exhibition in Dallas, Texas, the United States, on Dec. 8, 2019. Dinosaur exhibition Jurassic Quest is held in Dallas on Dec. 6 through Dec 8, 2019. More than 80 true-to-life size dinosaur and other animal models are on display. (Photo by Dan Tian/Xinhua)