单项选择题


What day is Halloween

A．December 31st.
B．October 31st.
C．November 4th.
D．November 1st.
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单项选择题
Malnutrition has caused much suffering to millions of people all over the world for a long time______.
A．but the problem is not as serious now as before
B．and the problem is as serious now as at any time before
C．but the future looks quite promising
D．but the problem is likely to become less serious
单项选择题
From the passage we know that the author______.
A．thinks that scientists are about to achieve artificial intelligence
B．doubts whether scientists can ever achieve artificial intelligence
C．does not think that scientists have found real artificial intelligence
D．is sure that scientists have achieved artificial intelligence
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