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【单选题】
某兴趣小组为探究外界条件对可逆反应A（g）+B（g）? C（g）+D（s）的影响，进行了如下实验：恒温条件下，往一个容积为10L的密闭容器中充入1mol A和1mol B，反应达平衡时测得容器中各物质浓度为I。然后改变不同条件做了另三组实验，重新达到平衡时容器中各成分的浓度分别为Ⅱ ， Ⅲ ，Ⅳ。 针对上述系列试验，下列结论中错误的是（ ）A.
由I中数据可计算出该温度下反应的平衡常数是K='20' mol -1 ?L.
B.
Ⅱ可能是通过增大C的浓度实现的
C.
若Ⅲ只是升高温度， 则与I比较，可以判断出正反应一定是放热反应
D.
第Ⅳ组实验数据的得出，通过压缩容器的体积就可以实现
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【简答题】阅读理解。 Four girls went to school together every day by taxi. One day one of the girls said, 'There is a test this morning, let's get to school late. Then we can miss the test.' 'What can we say to the ...
【简答题】A．Only one out of four girls cries less often than boys. B．Of four boys, only one cries very often. C．Girls cry four times as often as boys. D．Only one out of four babies doesn't cry often.
【简答题】A．Only one in four girls cries less often than boys. B．Of four boys, only one cries very often. C．Girls cry four times as often as boys. D．Only one in four babies doesn't cry often.
【单选题】标志着第三世界形成的是( )
A.
东亚与北非等国独立
B.
1960 年非洲 17 国独立
C.
万隆亚非会议的召开
D.
1968 年英法在非洲的殖民统治基本瓦解《当代世界经济与政治》
【单选题】___ of the students in our school are girls.
A.
Four-ninth
B.
Four-ninths
C.
Four-nineth
D.
Four-nineths
【单选题】The four girls can help me through this ____process.
A.
adjust
B.
adjustment
C.
adjustive
D.
advantage
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