科学60秒:身体温暖保健康
As a bitter winter storm rages on the east coast, it’s hard to knock being warm-blooded. But what about the metabolic cost of maintaining a high body temperature? Well, a new study finds that we...
社会:移民者抗议冻结约旦河西岸建设
Hints:Benjamin NetanyahuJewish settlement councils have declared a general strike to protest the Israeli government’s freeze on construction in West Bank communities. Settlement leaders demonst...
晨读美文053
晨读美文Dear sir, I am very sorry that the pressure of other occupations has prevented me from sending an earlier reply to your letter. In my opinion a man’s first duty is to find a way of sup...
晨读美文035
晨读美文We enjoy reading books that belong to us much more than if they are borrowed. A borrowed book is like a guest in the house; it must be treated with punctiliousness, with a certain conside...