That evening, ___ I will tell you more about later, I ended up working very late. [ ]A. thatB. which

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• 将植物的一个枝条的树皮剥去一圈后，将会（）A．影响水和无机盐的运输B．影响水、无机盐和有机物的运输C．影响有机物的运输D．不会影响植物的运输作用-生物
• Nowadays teenagers like to go to fast food restaurants, ____ as the name says, eating doesn't t
• It is few people, _____ have come to ask for the position, ____ fit for the job. [ ]A. who; who do I
• Have you ever listened to the song Yesterday once more, _____ singer died in her early years? [ ]A.
• 根吸收的水分是通过______把水送到叶、花等器官的．-生物
• 为提高树的成活率，常给一些刚移栽的树木输液（水和无机盐），你认为针头必须插入到树干的（）A．树皮B．韧皮部C．形成层D．木质部-生物
• 在树上乱刻图案和文字，可能导致树木死亡的原因是（）A．切断水和无机盐向上运输的通道B．切断水和无机盐向下运输的通道C．切断有机物向上运输的通道D．切断有机物向下运输的通道，-生物
• 水分和无机盐在植物茎内的运输途径是（）A．茎的导管B．茎的筛管C．茎的形成层D．茎中的营养组织-生物
• 根不断增加长度的主要原因是（）A．分生区分裂及伸长区细胞的伸长B．分生区及根冠的变化C．伸长区可以不断伸长D．分生区细胞不断增生-生物
• She's in a hopeless situation, ____wewill keep a very close eye on[ ]A. where B. when C. which
• 下列关于植株的生长说法错误的是（）A．根的生长要靠分生区细胞数量增加B．根的生长要靠伸长区细胞数量增加C．植物的生长需要水、无机盐和有机物D．枝条是芽发育成的-生物
• 下列有关说法正确的是（）A．根吸水的主要部位是根尖的成熟区B．植物茎中的筛管存在于韧皮部，也具有疏导水分的作用C．上表皮的海绵组织含叶绿体比下表皮的栅栏组织多D．构成叶片的-生物
• 观察豌幼苗的根，发现根尖部位有很多白色的“毛”，这就是根毛，根毛的存在对于植物的意义在于[]A．增加根的牢固性B．保护根尖C．增加吸收面积D．加强营养运输-八年级生物
• I was given three books on sewing, the first _____ I really enjoyed. [ ]A. that B. which C. of which
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• The people, _____ had been damaged by the flood, were given help by the Red Cross. [ ]A. all whose h
• 下列图是植物的几种组织．其中能把根部吸收的水和无机盐向上运输到叶片，把叶片制造的有机物向下运输的是（）A．B．C．D．-生物
• 从掐断的幼嫩的植物茎上可看见汁液，它们来自于（）A．导管B．细胞液C．筛管D．水蒸气-生物
• 根尖是由根冠、______、______和______组成．-生物
• 根的生长是由于（）A．根冠不断产生新的细胞，分生区不断产生新细胞B．根冠不断产生新的细胞，伸长区的细胞不断伸长C．伸长区的细胞不断伸长，成熟区形成了大量的根毛D．分生区不断-生物
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• 在植物根尖的结构中，终生保持分裂能力的是[]A．根冠B．分生区C．伸长区D．成熟区-七年级生物
• 下列植物中根系类型属于须根系的是（）A．狗尾巴草B．龙眼树C．桃树D．梧桐树-生物
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• 科学兴趣小组了解到植物的茎具有背离地面向上生长的特性．查阅资料发现，玉米幼苗能在黑暗中生长较长时间，是一种比较好的实验材料．于是他们利用玉米幼苗、大纸板箱等器材进行-生物
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