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hidden causes
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单项选择题People are likely to have a higher cholesterol level in winter because

A．they tend to take in less vitamin D in that season.
B．they do less exercise and become weaker than usual.
C．they need to eat much more greasy food to keep warm.
D．they get less sun to convert cholesterol into vitamin

单项选择题The second paragraph implies that

A．the world’s earthquake laboratories were not effective in detecting seismic "pre-shocks".
B．seismic signaling was the major communication form of many animal species.
C．those animal species can feel and understand all kinds of vibrations.
D．all storage animal behaviors can be explained by extra-sensory perception.

单项选择题Which of the following is palatal affricate

A.

B. [∫]
C.

D. [j]

单项选择题Which of the following cities was believed to better accept music of Romantic style

A．Paris.
B．Warsaw.
C．Vienna.
D．A city in Scotlan

单项选择题According to the passage, TNT offers all of the following EXCEPT

A．emergency help in the floods in Bangladesh.
B．emergency help in the Asian tsunami in 2004.
C．volunteer work for World Food Program.
D．conservation of seven major freshwater river basins.