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【单选题】
函数 的间断点是? (首先看定义域不包含的点,譬如让分母为0的点之类的; 如果是分段函数,不但要看各个段上的定义域断点,还要看分段点处左极限和右极限,如果左极限=右极限,还要比较这个极限值和真正的函数值)。A.
x=1
B.
x=0
C.
没有断点，全实数域连续。
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【简答题】The slaves in the south were (tortured) during the Civil War.
【单选题】The African ancestors of today's black Americans were brought to the US as slaves in the seventeenth, eighteenth, and nineteenth century. They worked on farms, especially the large farms in the southe...
A.
. African ancestors of today's black Americans.
B.
. The opposition to slavery in the United States.
C.
. Slavery in the United States.
D.
. The right of black Americans.
【判断题】In the South, slaves were used both agricultural and non-agricultural employment, especially in highly productive farming and stock-raising for the West Indian market in southern Rhode Island, Long Is...
A.
正确
B.
错误
【单选题】属于足厥阴肝经的腧穴是：
A.
合谷 曲池 腹结 上巨虚
B.
中脘 阳陵泉 气海 行间 期门
C.
脾俞 胃俞 大肠俞 三阴交 关元
D.
气海 照海 石门 肾俞 关元俞
E.
大肠俞 脾俞 气海 合谷 曲池
【单选题】President Lincoln's ______ was to free black slaves in the south in American history.
A.
Proclamation of Emancipation
B.
Free Speech
C.
Liberation Speech
D.
Inaugural Speech
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