We would like to take this opportunity to thank our partners, without ________ we would not be able

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• We are getting our degree soon, _____also announces the end of our college life. [ ]A. that B. which
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• 导管是植物水分在______内的运输途径，每一根导管是由许多______、______的细胞组成，上下细胞间的______消失，形成了一根______的管道．植物根、茎、叶中的导管是______的，-
• Between the two parts of the concert is an interval，________ the audience can buy icecream.[ ]A．when
• There are quite a few good books here, some of _____I can recommend to my students. [ ]A. those B. t
• Everyone will go through life's stages of ups and downs, _____self-respect plays a key role in
• Jim passed the driving test, ____________ surprised everyone in the office.[ ]A.whichB.thatC.thisD.i
• He is working hard, _____ will make him pass the final exam. [ ]A. that B. which C. for which D. who
• The scientists all agreed that rules of physics, ______ we are allfamiliar, govern the world.[ ]A.to
• 植物体内运输有机物的结构是（）A．筛管B．导管C．形成层D．胞间连丝-七年级生物
• This machine, _____ for many years, is still working perfectly. [ ]A. after which I have looked B. w
• The settlement is home to nearly 1,000 people, many of _____left their village homes for a better li
• 导管是由一个细胞构成的．______．-生物
• 橡胶树我们美丽的海南岛的一种重要的经济林，用一定的方式对橡胶树进行割皮处理，就能收获工业上橡胶制品的原料，即白色乳汁状的液体．流出乳白色液体的结构是（）A．树皮B．导管-生物
• Luckily he is going to attend Qinghua University, _____ his sister graduated last year.[ ]A. thatB.
• 如图为茎的输导功能示意图，①-④所示箭头能正确代表物质运输方向的是（）A．①③B．②③C．①④D．②④-生物
• The last time they went to Scotland was in May，________ the weather was beautiful.[ ]A. thatB. whenC
• 如图是植物的导管和筛管，甲为______；乙为______．甲的作用是______，乙的作用是______．-生物
• We have four classes in the morning, and ______ every two classes, there is an internal, ______ we c
• In our factory there are 2,000 workers, two thirds of _____ are women. [ ]A. them B. which C. whom D
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• 2009年春，我县提出：创建省级园林城市，营造绿色宜居家园。绿化工人在移栽树苗时，其根部总是带有一个大的“土坨”，下列有关解释不正确的是：[]A．防止秧苗的幼根和根毛受到损伤-七年级生物
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• 如图是被子植物的生长示意图，请根据图及有关知识回答下列问题．（1）图中的[1]是植物体的根，它能由短变长的根本原因是______区细胞的不断生长．（2）[1]的箭头指向表示植物的根系-生物
• 根系的分布特点是（）A．植物的根系一般向下分布，又细又长B．根系主要在土壤浅层分布C．根系的分布范围一般等于地上部分树幅的范围D．根系的分布范围一般都大于地上部分树幅的范围-生物
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• I found many people, most of _____I didn't know, quarrelling outside. [ ]A. that B. which C. wh
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• They arrived at a farmhouse, in front of _____ sat a small boy. [ ]A. whom B. whoC. which D. that -高
• It rained hard yesterday, _____ prevented me from going to the park. [ ]A. that B. which C. as D. it
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• 关于下列植物体内物质运输的说法正确的是（）A．韧皮部内有导管，木质部内有筛管B．导管运输有机物，筛管运输水和无机盐C．导管和筛管把营养物质运输到各部位的细胞D．导管和筛管只-七年级生物
• 如果树木主干上的树皮被环剥一圈，树木将会死亡，原因是（）A．根吸收的水和无机盐不能运输到枝和叶B．叶制造的有机物不能运输到根C．根吸收的有机物不能运输到枝和叶D．木质部得不-七年级生物
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• 俗话说“人要脸，树要皮”，这是因为在树皮中有重要的输导组织--筛管，它可以将植物叶片制造的有机物按照从上往下的方向输导．______．-生物
• 小明不小心折断树枝，发现有的小管子流的是水，有的流的是象牛奶一样的物质，那么里面流水的是______管；牛奶一样的物质是______，运输它的是______管．-生物
• As a child，Jack studied in a village school，______ is named after his grandfather．[ ]A．whichB．whereC
• 移栽植物应尽量在幼苗期，而且要带土移栽，这是为了[]A．减少水分散失B．减少根和根毛的折断C．防止营养流失D．防止植物不适应环境-七年级生物
• The Chinese government, _____ was reported yesterday, will develop a beautiful rural environment ___
• Alice received an invitation from her boss, _____ came as a surprise. [ ]A. it B. that C. which D. h
• 下面是关于生物圈中水循环的示意图，请你将括号的空白处补充完整．-生物
• 如果把小树的树皮剥掉，往往会造成小树死亡．主要原因是破坏了树皮中的（）A．保护组织B．机械组织C．输导组织D．分生组织-生物
• 绿色植物光合作用生成的主要产物，主要在茎的什么结构中运输（）A．木质部B．髓C．形成层D．韧皮部-七年级生物
• 种在厕所旁边的树木的根一般趋向于厕所，这说明根具有（）A．向阳性B．向肥性C．向水性D．向地性-生物
• 观察根尖结构时，可以明显看到有导管的部位是（）A．根冠B．分生区C．伸长区D．成熟区-生物