—What have you decided to buy for your mother _______ Mother's Day? —Some flowers. [ ]
A.
at
B.
on
C.
to
D.
in
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【单选题】Suppose a tax of $0.10 per unit on a good creates a deadweight loss of $100. If the tax is increased to $0.30 per unit, the deadweight loss from the new tax would be
【单选题】Suppose a tax of $0.50 per unit on a good creates a deadweight loss of $100. If the tax is increased to $2.50 per unit, the deadweight loss from the new tax would be
【判断题】A tax creates a tax wedge between a buyer and a seller. This causes the price paid by the buyer to rise, the price received by the seller to fall, and the quantity sold to fall.