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【判斷題】
一般的，一棵決策樹包含一個根結點、若干個內部結點和若干個葉結點；葉 結點對應于決策結果，其他每個結點則對應于一個屬性測試；根結點包含樣本全 集。
A.
正確
B.
錯誤
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舉報參考答案：
舉一反三
【單選題】The WHO’s attitude to e-cigarettes can be best described as __________.
A.
favorable
B.
doubtful
C.
neutral (中立的)
D.
optimistic
【單選題】The actress has to ___a diet to lose weight because she is to act a pretty slim girl in a film.
A.
take on
B.
carry on
C.
go on
D.
have on
【單選題】The books in the largest library of the city could _____ all the information we need.
A.
offer
B.
supply
C.
provide
D.
present
【單選題】Which of the following statements about e-cigarettes is TRUE according to the passage?
A.
E-cigarettes use batteries as power.
B.
E-cigarettes can replace real cigarettes.
C.
E-cigarettes can help smokers stop smoking.
D.
E-cigarettes can produce some smoke that is not smelly.
【單選題】I soon found that the work I was doing had already been done by someone else—_____, I was wasting my time.
A.
to make things worse
B.
in other words
C.
at the same time
D.
for another thing
相關題目：
【單選題】The WHO’s attitude to e-cigarettes can be best described as __________.
A.
favorable
B.
doubtful
C.
neutral (中立的)
D.
optimistic
【單選題】The actress has to ___a diet to lose weight because she is to act a pretty slim girl in a film.
A.
take on
B.
carry on
C.
go on
D.
have on
【單選題】The books in the largest library of the city could _____ all the information we need.
A.
offer
B.
supply
C.
provide
D.
present
【單選題】Which of the following statements about e-cigarettes is TRUE according to the passage?
A.
E-cigarettes use batteries as power.
B.
E-cigarettes can replace real cigarettes.
C.
E-cigarettes can help smokers stop smoking.
D.
E-cigarettes can produce some smoke that is not smelly.
【單選題】I soon found that the work I was doing had already been done by someone else—_____, I was wasting my time.
A.
to make things worse
B.
in other words
C.
at the same time
D.
for another thing
參考解析：
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