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【单选题】
下列事实不能用勒夏特列原理解释的是A.
溴水中有下列平衡Br 2 +H 2 O HBr+HBrO，当加入硝酸银溶液后，溶液颜色变浅
B.
合成氨反应，为提高氨的产率，理论上应采取降低温度的措施
C.
反应CO(g)+NO 2 (g) CO 2 (g)+NO(g)(正反应为放热反应)，达平衡后，升高温度体系颜色变深
D.
对于2HI(g) H 2 (g)+I 2 (g)，达平衡后，缩小容器体积可使体系颜色变深
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举一反三
【单选题】.He tries ____ English and he practices _____ English every day.
A.
to learn ; speaking
B.
learning ; speaking
C.
learning ; to speak
D.
to learn ; to speak
【简答题】A．He has to change the topic for his composition. B．He has fallen behind others in English class. C．He hasn't made up his mind as to what to write about. D．The book he borrowed will be due tomorrow.
【单选题】以下关于单侧忽略训练的叙述错误的是()
A.
拼图时拼图块放置在忽略侧。
B.
插木钉时所有木钉均放置在忽略侧。
C.
与患者讲话时站在健侧。
D.
阅读文章时给予视觉暗示，在忽略侧用彩色线条标出或用手指指出做标记。
【单选题】利用加权平均法预测,在给定权数时,可采用由距离预测期较远到较近,( )。
A.
权数逐渐递减
B.
权数逐渐递增
C.
权数以公差为1的等差数列
D.
权数以公差为2的等差数列
【简答题】A.He normally practices oral English every day． B.He always speaks English with his best friend． C.He often practices English on the Internet． D.He gets many free materials about oral English．
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