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【单选题】
关于决策树，以下说法中错误的是？A.
决策树不要求样本集的各个维度的特征具有同质性
B.
一般无法用基于距离的指标来衡量样本集划分结果的紧致性
C.
一般不采用熵的概念来度量每个子样本集的纯度
D.
决策树是有监督学习方法
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【单选题】47
A.
This mountain rises l,532 feetmaking it the highest mountain on the Atlantic seaboard.
B.
It is split almost inhalf by Somes Sound, a deep and narrow stretch of water, seven miles long.
C.
The wealthy residents of Mt. Deserts Island selfishly kept itto themselves.
D.
Mt. Desert island is one of the most famous ofall the islands left behind by the glacier.
E.
The term comes from theactivity of the ice age.
F.
It also lies in a major bird migration lane and is a resting spot for manybirds
【简答题】The dog was smelling a ball of wool in the living room．
【单选题】— Is there a TV in your bed room? — _______. But there is a big TV in the living room. [ ]
A.
Yes, there is
B.
Yes, it is
C.
No, there isn't
D.
No, it isn't
【简答题】Mountain Everest, the peak where is hardly seen, is the highest mountain in the world.
【单选题】Why do you like the living room?
A.
I like the living room .
B.
Because it's so big .
【单选题】48
A.
This mountain rises l,532 feetmaking it the highest mountain on the Atlantic seaboard.
B.
It is split almost inhalf by Somes Sound, a deep and narrow stretch of water, seven miles long.
C.
The wealthy residents of Mt. Deserts Island selfishly kept itto themselves.
D.
Mt. Desert island is one of the most famous ofall the islands left behind by the glacier.
E.
The term comes from theactivity of the ice age.
F.
It also lies in a major bird migration lane and is a resting spot for manybirds
【单选题】50
A.
This mountain rises l,532 feetmaking it the highest mountain on the Atlantic seaboard.
B.
It is split almost inhalf by Somes Sound, a deep and narrow stretch of water, seven miles long.
C.
The wealthy residents of Mt. Deserts Island selfishly kept itto themselves.
D.
Mt. Desert island is one of the most famous ofall the islands left behind by the glacier.
E.
The term comes from theactivity of the ice age.
F.
It also lies in a major bird migration lane and is a resting spot for manybirds
【单选题】People choose to build Astronomy on Manna Kea because it's the highest mountain among the world's islands.
A.
Y
B.
N
C.
NG
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