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"Every time I express my belief that sex education should begin at primary school level, many of my friends are stunned, almost open mouthed. They say 'Oh, my goodness! How can we allow these innocent kids to learn about sex?'" said Li Ming, a sex education teacher at Xingzhi Primary School in the Beijing's Daxing district.

"Despite its dominance in mainland's .3 trillion food delivery and online services industry, and the backing from large hedge funds, the company may still be penalized for a geopolitical storm and global stock sell-offs beyond its control," Lam said.

"E-commerce platforms used to be reserved for low-price products. But now not just price-sensitive but quality-conscious consumers flock to these websites or mobile applications for goods," Lu said.

"Enterprises in China should learn from their counterparts abroad, that is besides annual environmental report, to make use of more media channels, such as Weibo, to interact with the public. Also, investors should take the ability of environmental information disclosure into consideration before making the decision," she added.

"Exploring the Red Planet with NASA's Mars Helicopter exemplifies a successful marriage of science and technology innovation and is a unique opportunity to advance Mars exploration for the future," said Thomas Zurbuchen, associate administrator for NASA's Science Mission Directorate at the agency headquarters here.