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【简答题】
(2019春•天心区校级期末)在探究细胞大小与物质运输关系的实验中,用NaOH溶液浸泡不同边长的含酚酞的琼脂立方块一定时间后,取出立方块切半。其剖面如图所示,其中x为NaOH扩散的深度,y为立方块的边长,阴影代表红色。下列叙述中正确的是( ) A.该实验的自变量为x,因变量为y B.x的值随y值的增大而增大 C.物质运输效率可用 表示 D.y值越小,NaOH扩散的体积占琼脂块总体积的比例越大
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举一反三
【简答题】writing an outline of Text A in unit 1 (based on the mooc about Text Organization)
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【单选题】Questions 23 to 25 are based on the passage you have just heard
A.
stupid
B.
active
C.
brave
D.
careless
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【单选题】Questions 23 to 25 are based on the passage you have just heard
A.
watch educational TV programs only.
B.
write two book reports a week.
C.
help with housework.
D.
keep a diary.
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【单选题】Passage Three Questions 23 to 25 are based on the passage you have just heard. Questions 23
A.
Recalling something from one’s memory.
B.
The preparatory method in exams.
C.
Conscience.
D.
Man’s mind.
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【单选题】已知浇筑100m3闸底板成品混凝土时需用112m3半成品混凝土。若埋块石率20%,则浇筑100m3闸底板埋块石成品混凝土时,需耗用块石 ( )m3成品码方。
A.
39.2
B.
37.4
C.
22.4
D.
20
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【单选题】Questions 23 to 25 are based on the passage you have just heard
A.
he had only a third-grade education.
B.
he once threatened to kill his teacher.
C.
he often helped his mother do housework.
D.
he grew up in a poor single-parent family.
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【单选题】Text Organization?
A.
1-2 3-6 7-9 10
B.
1 2-3 4-9 10
C.
1-4 5-8 9-10
D.
1 2-5 6-10
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【判断题】儿童时期出现的蛋白质-能量营养不良主要有两种。
A.
正确
B.
错误
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【简答题】A．$2,650 or so. B．$500 or less. C．Over $3,500. D．$10,000 or so. Questions 23 to 25 are based on the conversation you have just heard.
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【简答题】植物性食物为主食的人普遍有缺钙的倾向，请据某人的一日食谱回答： 食物种类 食物重量（g） （g/100g） （g） 馒头 1000 0.03 0.8 青白菜 500 0.03 豆腐 200 0.16 牛奶 0 0.10 猪肉 50 0.006 （1）如果少年儿童长期缺钙易患______病； （2）有的孩子虽补了很多的钙制品，但还有明显的缺钙症状，最可能的原因是缺乏______． （3）豆腐、牛奶中...
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相关题目：
【简答题】writing an outline of Text A in unit 1 (based on the mooc about Text Organization)
查看完整题目与答案
【单选题】Questions 23 to 25 are based on the passage you have just heard
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stupid
B.
active
C.
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D.
careless
查看完整题目与答案
【单选题】Questions 23 to 25 are based on the passage you have just heard
A.
watch educational TV programs only.
B.
write two book reports a week.
C.
help with housework.
D.
keep a diary.
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【单选题】Passage Three Questions 23 to 25 are based on the passage you have just heard. Questions 23
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Recalling something from one’s memory.
B.
The preparatory method in exams.
C.
Conscience.
D.
Man’s mind.
查看完整题目与答案
【单选题】已知浇筑100m3闸底板成品混凝土时需用112m3半成品混凝土。若埋块石率20%,则浇筑100m3闸底板埋块石成品混凝土时,需耗用块石 ( )m3成品码方。
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39.2
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【单选题】Questions 23 to 25 are based on the passage you have just heard
A.
he had only a third-grade education.
B.
he once threatened to kill his teacher.
C.
he often helped his mother do housework.
D.
he grew up in a poor single-parent family.
查看完整题目与答案
【单选题】Text Organization?
A.
1-2 3-6 7-9 10
B.
1 2-3 4-9 10
C.
1-4 5-8 9-10
D.
1 2-5 6-10
查看完整题目与答案
【判断题】儿童时期出现的蛋白质-能量营养不良主要有两种。
A.
正确
B.
错误
查看完整题目与答案
【简答题】A．$2,650 or so. B．$500 or less. C．Over $3,500. D．$10,000 or so. Questions 23 to 25 are based on the conversation you have just heard.
查看完整题目与答案
【简答题】植物性食物为主食的人普遍有缺钙的倾向，请据某人的一日食谱回答： 食物种类 食物重量（g） （g/100g） （g） 馒头 1000 0.03 0.8 青白菜 500 0.03 豆腐 200 0.16 牛奶 0 0.10 猪肉 50 0.006 （1）如果少年儿童长期缺钙易患______病； （2）有的孩子虽补了很多的钙制品，但还有明显的缺钙症状，最可能的原因是缺乏______． （3）豆腐、牛奶中...
查看完整题目与答案