单项选择题

When did VN-Index begin its declining trend
Who are the subjects of the research on the influence of milk powder

A．Mothers who bottle-feed their babies.
B．Workers in milk power plants and office workers.
C．Nannies and bakers who often handle milk powder.
D．Blue-collar workers who have asthma.
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单项选择题
The opponents don’t agree to the proposal of levying tax on the obese mainly because ______.
A．they are very corpulent themselves
B．the assessment system is not sound
C．people should have their own rights
D．it may cause a lot of social problems
单项选择题
The intense political situation in Thailand is mainly due to ______.
A．the anti-government’s request for a new election
B．the conflict between the armed men and the government
C．the demonstration held by the UDD proponents
D．the arrest operation taken by the officials
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