题目

“Hello.” — it is one of the first words we learn as babies, yet it’s one of the last ones we think to use as adults. That’s regrettable, because saying hello is more than just saying hello — it’s the respect of another’s worth. How might the world change — how might we change — if we have mastered this word? To find out, I spent one month saying hello to every person I met. Here’s what I’ve learnt. It can improve productivity. In one of the few studies ever done on this subject, Allan Allday, an assistant professor of special education at Oklahoma State Universit下列地形区中，位于非季风区的是( )A. 东北平原 B. 四川盆地 C. 准噶尔盆地 D. 云贵高原