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【单选题】
人感染猪带绦虫的成虫是因为A.
误食猪带绦虫的虫卵
B.
误食猪囊尾蚴
C.
被蚊子叮咬
D.
与绦虫病患者有密切接触
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【简答题】Big Ben is the nickname for the great bell of the clock in London. The name was given in honor of Sir Benjamin Hall, who was in charge of the works when the bell was installed in 1856. The clock has b...
【单选题】In the last paragraph, people are recommended to have ______.
A.
foods containing large quantities of refined flour and vegetables
B.
foods with fibers removed
C.
foods with more fibers
D.
food with additives
【单选题】Our physics teacher explained to us that light______faster than sound.
A.
is traveling
B.
traveled
C.
travels
D.
has traveled
【单选题】. — I ‘ll ask our physics teacher to explain Newton’s Second Law of Motion, which she taught us yesterday. — That’s just _______ most of the students haven’t understood.
A.
what
B.
why
C.
how
D.
where
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