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【简答题】
胡萝卜、西红柿和其他一些蔬菜含有较丰富的β-胡萝卜素，β-胡萝卜素具有防止细胞癌变的作用。近年来提炼出的β-胡萝卜素被制成片剂并建议吸烟者服用，以防止吸烟引起的癌症。然而，意大利博洛尼亚大学和美国德克萨斯大学的科学家发现，经常服用β-胡萝卜素片剂的吸烟者反而比不常服用β-胡萝卜素片剂的吸烟者更易于患癌症。以下哪项如果为真，最能够解释上述矛盾？（ ）
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参考答案：
举一反三
【单选题】科技档案案卷目录、卷内目录、卷内备考表表格宜采用( )以上白色书写纸制作。
A.
60g
B.
70g
C.
80g
D.
100g
查看完整题目与答案
【简答题】Melanie got so upset by what Max had said to her that something inside her exploded, and she flew ____ him and hit him in a rage. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespac...
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【多选题】《桃花源诗》中哪些诗句表现了桃源社会人们自由、平等、快乐的生活?
A.
俎豆犹古法，衣裳无新制。
B.
童孺纵行歌，班白欢游诣。
C.
怡然有余乐，于何劳智慧？
D.
愿言蹑清风，高举寻吾契。
查看完整题目与答案
【简答题】请研究并编制一个新型城镇化的发展规划案例。
查看完整题目与答案
【简答题】Melanie got so upset by what Max had said to her that something inside her exploded, as she flew _______ him and hit him in a rage.
查看完整题目与答案
【单选题】根据《科学技术档案案卷构成的一般要求》，案卷目录、卷内目录、卷内备考表的表格规格通常是（）。
A.
185mm×260mm
B.
195mm×270mm
C.
297mm×210mm
D.
310mm×220mm
查看完整题目与答案
【单选题】Melanie got so upset by what Max had said to her that something inside her exploded, and she him and hit him in a rage.
A.
cried at
B.
flew at
C.
mixed at
D.
laughe at
查看完整题目与答案
【单选题】Melanie got so upset by what Max had said to her that something inside her exploded, and she ________ him and hit him in a rage.
A.
ran away from
B.
flew at
C.
flew on
D.
laugh at
查看完整题目与答案
【单选题】给水度(μ)、持水度(Sr)、孔隙度(n)三者之间的关系是
A.
μ+Sr＜n
B.
μ+Sr＞ n
C.
μ+Sr＝n
D.
μ+Sr≠n
查看完整题目与答案
【简答题】Melanie got so upset by what Max had said to her that something inside her exploded, and she flew____________ him and hit him in a rage.
查看完整题目与答案
相关题目：
【单选题】科技档案案卷目录、卷内目录、卷内备考表表格宜采用( )以上白色书写纸制作。
A.
60g
B.
70g
C.
80g
D.
100g
查看完整题目与答案
【简答题】Melanie got so upset by what Max had said to her that something inside her exploded, and she flew ____ him and hit him in a rage. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespac...
查看完整题目与答案
【多选题】《桃花源诗》中哪些诗句表现了桃源社会人们自由、平等、快乐的生活?
A.
俎豆犹古法，衣裳无新制。
B.
童孺纵行歌，班白欢游诣。
C.
怡然有余乐，于何劳智慧？
D.
愿言蹑清风，高举寻吾契。
查看完整题目与答案
【简答题】请研究并编制一个新型城镇化的发展规划案例。
查看完整题目与答案
【简答题】Melanie got so upset by what Max had said to her that something inside her exploded, as she flew _______ him and hit him in a rage.
查看完整题目与答案
【单选题】根据《科学技术档案案卷构成的一般要求》，案卷目录、卷内目录、卷内备考表的表格规格通常是（）。
A.
185mm×260mm
B.
195mm×270mm
C.
297mm×210mm
D.
310mm×220mm
查看完整题目与答案
【单选题】Melanie got so upset by what Max had said to her that something inside her exploded, and she him and hit him in a rage.
A.
cried at
B.
flew at
C.
mixed at
D.
laughe at
查看完整题目与答案
【单选题】Melanie got so upset by what Max had said to her that something inside her exploded, and she ________ him and hit him in a rage.
A.
ran away from
B.
flew at
C.
flew on
D.
laugh at
查看完整题目与答案
【单选题】给水度(μ)、持水度(Sr)、孔隙度(n)三者之间的关系是
A.
μ+Sr＜n
B.
μ+Sr＞ n
C.
μ+Sr＝n
D.
μ+Sr≠n
查看完整题目与答案
【简答题】Melanie got so upset by what Max had said to her that something inside her exploded, and she flew____________ him and hit him in a rage.
查看完整题目与答案
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