The girl is very shy, and seldom speaks until she ________ to. [ ]A. is spokenB. is speakingC. speak

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• 细胞学说的内容不包括[]A．所有的生物都是由细胞组成的B．细胞由细胞膜、细胞质和细胞核构成C．所有的细胞必定是由别的活细胞产生D．细胞是所有生物结构和功能的基本单位-高二生物
• 下列科学家对细胞学说的建立作出了积极的贡献，其顺序正确的是[]A．维萨里、虎克、比夏、列文虎克B．维萨里、虎克、施莱登和施旺C．列文虎克、虎克、魏尔肖、施莱登D．维萨里、魏-高一生物
• 下列说法不正确的是[]A．细胞学说揭示了动植物细胞的统一性和多样性B．细胞学说是多位科学家在探索中开拓、继承、修正和发展后建立的C．将显微镜的低倍镜换成高倍镜后，一个视野-高一生物
• Months ago we sailed ten thousand miles across this open sea, which ________ the Pacific, and we met
• 细胞学说指出：一切动植物都由细胞发育而来。这个学说的科学价值主要是[]A．告诉人们所有的生物均由细胞构成B．证明了生物彼此间存在着亲缘关系C．说明了动植物的细胞是一样的D．-高一生物
• They would tell how the slaves _____on a ship to an American port on a rainy day. [ ]A. being brough
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• Months ago we sailed ten thousand miles across this open sea, which ________ the Pacific, and we met
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• English _____________ in more and more countries today.[ ]A. teachesB. teachC.was taughtD. is taught
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• 关于细胞学说的叙述，错误的是[]A．它揭示了动植物细胞的多样性B．建立者主要是施莱登和施旺C．它揭示了动植物的统一性和生物体结构的统一性D．是多位科学家在探索中开拓、继承、-高三生物
• The wet weather will continue tomorrow, when a cold front________ to arrive.[ ]A. will be expectedB
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