【题目】The performance was a great success because the orchestra was by an internationally famous conductor.
A. directed
B. performed
C.conducted
D. staged
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【题目】What’s your attitude ___________ Sharon Stone’s comment that the Wenchuan earthquake was a result of "bad karma"?
A. over B. about C. of D. towards
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【题目】图一表示果蝇体细胞中染色体和相关基因,图二为某家族的某种遗传病的系谱(等位基因用A和a表示)。请据图回答下列问题:
(1)图一中果蝇的性别是__________(雌、雄)性。该果蝇的中B、b和D、d两对基因的遗传遵循_________定律,其产生配子的基因型及其数量比例为____________________。
(2)图二中该遗传病的遗传方式是__________。如果3号与4号再生一个男孩,患病的概率为________。7号个体与某正常女子结婚(该女子父母正常,弟弟患该病)生正常男孩的概率是____________。
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【题目】The reason he was late for the meeting was he was held up by traffic jam during the
rush hour.
A. why; because B. that; that
C. why; that D. that; because
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【题目】甲图表示燕麦幼苗生长素浓度与作用的关系;乙图表示将一株燕麦幼苗水平放置,培养一段时间后的生长情况;丙图表示燕麦胚芽鞘。
(1)甲图中,根和芽的最适宜生长素浓度分别为________mol/L、________mol/L。c点生长素浓度对根生长的效应是 ,对芽生长的效应是______________,c点生长素浓度对于芽来说是________(填“高”或“低”)浓度。
(2)乙图中b侧生长素浓度_________(填“大于”、“小于”或“等于”)a侧,这是由于___________引起的,a侧生长素对茎生长的效应是__________。
(3)为验证在单侧光照射下,丙图燕麦胚芽鞘尖端产生的生长素的横向运输发生在A段而不是发生在B段。某同学设计了如下实验步骤,请帮助其完成下列有关实验过程:
①实验材料及用具;燕麦胚芽鞘,一侧开孔的硬纸盒,薄云母片,光源等。
②实验过程;给以右侧单侧光照射,在下列图中绘出插入云母片的位置,并在下面用文字说明。
③实验结果:
a.___________________。
b.___________________。
c.___________________。
④实验结论:_________________________________________。
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【题目】(2017·天津) My eldest son, ___________ work takes him all over the world, is in New York at the moment.
A. that B. whose C. his D. who
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【题目】(2016·江苏) Many young people, most __________ were well-educated, headed for remote regions to chase their dreams.
A. of which B. of them
C. of whom D. of those
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【题目】(2016·北京) I live next door to a couple ___________ children often make a lot of noise.
A. whose B. why C. where D. which
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【题目】 If we learn some knowledge of first aid,it can make a real ________ in time of accidents.
A.appointment B.decision C.deal D.difference
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