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【单选题】
称取1.032g氧化铝试样,溶解定250mL容量瓶中,移取25.00mL,加入TAl2O3/EDTA的EDTA溶液10.00mL,以二甲酚橙为指示剂,用Zn(Ac)2标准滴定溶液12.20mL滴定至终点,已知20.00mLZn(Ac)2溶液相当于13.62mLEDTA溶液。则试样中Al2O3的含量为()。A.
0.0123
B.
0.0247
C.
0.1234
D.
0.2467
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【单选题】5-6岁幼儿感知和理解数、量及数量关系的是（）。
A.
能通过一一对应的方法比较两组物体的多少
B.
能用数词描述事物或动作
C.
能用简单的图表述简单的数量关系
D.
会用数词描述事物的顺序和位置
【单选题】A) He was able to talk again. B) He raced to the nursing home. C) He could tell red and blue apart. D) He could not recognize his wife.
A.
He was able to talk again.
B.
He raced to the nursing home.
C.
He could tell red and blue apart.
D.
He could not recognize his wife.
【简答题】A．He was able to talk again. B．He raced to the nursing home. C．He could tell red and blue apart. D．He could not recognize his wife.
【单选题】Why was the wife in the film able to find a good job?
A.
Because she could speak French fluently.
B.
Because it was easy to find a job then.
C.
Because her husband helped her.
D.
Because no one wanted the job.
【简答题】A.He was able to talk again． B.He raced to the nursing home． C.He could tell red and blue apart． D.He could not recognize his wife．
【简答题】The Great Fire of London started in the very early hours of 2 September 1666. In four days it destroyed more than three-quarters of the old city, where most of the houses were wooden and close togethe...
【简答题】Using the Internet, he was able to ________ information on a terrible disease torturing his wife.
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