政治:以色列國防部長遭到恐嚇
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背誦美文——細(xì)胞與溫度
Cells and TemperatureCells cannot remain alive outside certain limits of temperature, and much narrower limits mark the boundaries of effective functioning. Enz...
災(zāi)難:威尼斯水災(zāi)
災(zāi)難:威尼斯水災(zāi)At one point the water in the central part of Venice was 1.56m above sea level. It hasn’t been that high since 1986. Venice gets regular flooding at this time of year but this wa...
災(zāi)難:北極冰層融化
災(zāi)難:北極冰層融化Research into the icecap of North Pole has found that it is melting so quickly than Arctic Ocean could lose most of ice during summer time in as little as ten years. Scientists ...
醫(yī)療:世衛(wèi)組織稱海地流行病風(fēng)險增加
醫(yī)療:世衛(wèi)組織稱海地流行病風(fēng)險增加The World Health Organization says it is worried about an explosion of diseases in Haiti. It says people are at great risk of getting diarrhea, cholera and other...