發(fā)展中國家孕婦需要補(bǔ)充維他命(2)

一位值得紀(jì)念的希臘人

短文Diogenes was a famous Greek philosopher of the fourth century B.C.,who established the philosophy of cynicism.He often walked about in the daytime holding a lighted lantern,peering around as ...

語言的力量

短文The Power of Words A group of frogs were traveling through the woods, and two of them fell into a deep pit. When the other frogs saw how deep the pit was, they told the two frogs that the...

揭秘植物的修枝(2)

揭秘植物的修枝(2)Hints:Ottoline Leyser University of York Think of a major road crowded with traffic. So many cars are on the main road that the cars on the side roads cannot enter. The stem is...