新德里会谈纪要(1)
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科学60秒:和藻类共生的蝾螈
A rolling stone gathers no____1____. But a salamander embryo can attract algae. Inside its tissues and cells. This intimate________—the first ever seen between algae and a vertebrate—is reveale...
请旧车和分心驾驶勿上路(1)
Hint: Ray LaHood Car Allowance Rebate SystemThis week in Washington, Transportation Secretary Ray LaHood announced plans for a "distracted driving summit" in September. Transportation and law ...
飓风来袭(1)
飓风恒瑞特和费力克斯登陆拉美,造成了极大的破坏Hurricane Felix made landfall as a category five storm, with heavy rainfall and maximum sustained winds of 260 kilometers per hour. Weather forecaste...
发展中国家孕妇需要补充维他命(1)
科学家发现,孕妇补充复合维他命可以有效降低产生低重婴儿的几率A recent study in Tanzania found that when pregnant women took vitamins every day, fewer babies were born too small. Babies that weigh...