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【判断题】
一国经济越落后,关税的财政作用越强。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】下列曲线分别表示元素的某种性质与核电荷数的关系（Z为核电荷数，Y为元素的有关性质）。下列有关说法错误的是：
A.
a图表示第三周期元素的原子半径(稀有气体除外)
B.
b图表示ⅡA族元素的最外层电子数
C.
c图表示第三周期元素的最高化合价
D.
d图表示第三周期元素单质的熔沸点
【判断题】Both the First Continental Congress and the Second Continental Congress were held in Boston
A.
正确
B.
错误
【简答题】When you are back home, the computer knows who you are.
【判断题】Both Harvard University and Massachusetts Institute of Technology (MIT) are located in the city of Boston.
A.
正确
B.
错误
【简答题】As a young man, Al was a skilled artist, a potter. He had a wife and two fine sons. One night, his oldest son 36 a severe stomachache and died suddenly. To make matters worse, his wife left him a shor...
【简答题】Why does the author mention both Boston and Chicago?
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