2. During the summers, Good Humor ice cream trucks visit the company's campuses every other Friday during lunchtime. In the fall, cider and doughnuts are served twice a month, mid-morning.
3. 单词popular 联想记忆：
4. That comes in spite of official figures released on Tuesday showing China’s exports had contracted for a second straight month in October, suggesting domestic demand is the main driver of price gains for producers.
6. Stanford's Zhenan Baohas has developed a super-flexible, super-durable, and super-sensitive material that can be the basis for future synthetic skin. People have tried developing synthetic skin before, but Baohas's material handles touch sensitivity better than any predecessor. It contains organic transistors and a layer of elastic, letting it stretch without taking damage. And it's self-powered—this skin contains a series of elastic solar cells.