Draw diagrams to show the market of desks.
①Impose taxes.
②a removal of subsidy
③ a rise in population size
④ advertising
⑤ an increase in the price of wood
⑥ a fall in the price of chair
⑦ a rise in the price of the desk
⑧ an improvement in the production method
Draw diagrams to show the market of wheat.
① a cut in tax
② bad weather
③ a report that eating wheat will cause cancer
④ an expectation that the price of wheat will rise
⑤ a change in the taste that people don’t like wheat
⑦ a rise in the price of rice
⑨ an increase in the price of seed 种子
⑥ a rumor that wheat is harmful to our health
⑧ a fall in the price of wheat