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【简答题】
阿尔茨海默病(缩写为 AD ,俗称 “老年痴呆”)是一种严重的中枢神经系统退行性疾病。研究表明, AD 病人的神经细胞外 β淀粉样蛋白( A β)沉积,该物质的沉积会损伤周围神经细胞的细胞膜和线粒体膜,导致神经细胞受损。下列分析错误的是 A . 向患者体内注射抗 A β的抗体,能减缓病情的发展速度 B . 向患者体内注射兴奋性神经递质,能明显改善其病情 C . AD 病人的 A β沉积在组织液中,会改变神经细胞的内环境 D . AD 病人的神经纤维上兴奋的传导和突触部位兴奋的传递均受到影响
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【单选题】下列关于挥发分的描述不正确的是( )。
A.
煤的挥发分随煤化程度的加深而减少
B.
煤化程度越浅，挥发分开始析出的温度越低
C.
含氧量高、煤化程度低的煤，挥发分发热量比较高
D.
挥发分含量高的煤，着火迅速，燃烧稳定，易于燃烧完全
【单选题】Awoman has ,to be______a man to go half as far.
A.
twice as good as
B.
as twice good as
C.
twice good as
D.
twice so good as
【单选题】ActiveX is the name(66)has given to a set of object-oriented concepts, technologies, and tools. It is important to notice that ActiveX is not a(67)technology, but a brand name, what it's applied to ca...
A.
HP
B.
Cisco
C.
SUN
D.
Microsoft
【单选题】下列关于豆类的描述不正确的是
A.
豆类可分为大豆类和其他豆类
B.
大豆的蛋白质含量为35％左右，含有人体所需的全部氨基酸，为优质蛋白
C.
大豆蛋白质赖氨酸含量较多，蛋氨酸较少，与粮谷类食物混合食用，能发挥蛋白质的互补作用
D.
豆类中，大豆的脂肪含量最低
【单选题】The little town has now grown into a modern big city, and is _____ what it used to be. [ ]
A.
twice the size than
B.
two times the size as
C.
twice the size as
D.
twice the size of
【简答题】He has seen that film twice ______
【单选题】The production of the factory has grown to _____ in 1999.
A.
twice as it was
B.
twice what it was
C.
as twice as it was
D.
twice that it was
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