阅读理解。 Tea is popular in the world, but more than three hundred years ago most of the people in Europe did not know anything about tea. Once an English doctor came back from China for C
His keys ___ on his desk. Those in the last and found case______ his keys. A. are; are B. is; aren’tC. are; aren’tD. aren’t ; aren’t
下列关于21三体综合征的叙述，错误的是（ ） A.21三体综合症是常染色体变异引起的遗传病 B.21三体综合症患者智力低下，身体发育缓慢 C.21三体
Simon is_________to make us all A. enough funny; laugh B. funny enough; laugh C. enough funny; to laugh D. funny enough; to laugh
2010年3月5日，温家宝总理在十一届全国人大三次会议的政府工作报告中指出：“我们所做的一切都是要让人民生活得更加幸福、更有尊严，让社会更加
About 1 million adult New Yorkers are obese(肥胖的), but nearly two-thirds of them don’t think they are, according to a study released on Tuesday by the city’s Department of Health and Me
中国共产党的成立是中国历史上开天辟地的大事。在她成立的大会上，被选举为中央局书记的是( ) A．陈独秀 B．李大钊C．李大钊 D．董必武
“纳米材料”是粒子直径为1~100nm的材料，纳米碳就是其中一种，若将纳米碳均匀地分散到蒸馏水中，所形成的物质（ ） ①是溶液 ②是胶体 ③能产生
