微观经济学第一次在线作业（Microeconomics for the first timeonline homework）Which of the following first questions is not true about microeconomics and macroeconomics?Your answer: ASubject score: 0.5Score: 0.5Annotation: A is wrong, macroeconomics regards economic whole as the object of study, do not take large-scale industry as the research objectWhich of the following second questions is most likely to be studied by micro economists?Your answer: CSubject score: 0.5Score: 0.5Annotation: the employment problem in an industry is micro, and the other three are macroeconomic issues.The third point on the frontier of production possibilities is...Your answer: ASubject score: 0.5Score: 0.5Note: the point on the boundary of the production possibility is efficient, and the point in it indicates inefficiency.Fourth, if a linear demand curve is tangent to a curve type demand curve, then the demand price elasticity of the two curve at the point of tangency (...)Your answer: ASubject score: 0.5Score: 0.5Note: the price elasticity of demand for a given point depends on its coordinates and slope, whether in straight line or curve, the two factors are the same.Fifth, if the demand curve is a straight line downward to the right, the seller's total income when the price drops from high to lowYour answer: BSubject score: 0.5Note: because the price elasticity of demand on the demand curve is different, the top left point is elastic, so reduce the price when the total income increased, right below the point of lack of flexibility, so reduce the price to reduce total revenue.Sixth, if the price of one of the two goods changes when the price of one of these two goods increases or decreases at the same time, the price elasticity coefficient of the cross demand isYour answer: ASubject score: 0.5Score: 0.5Annotation: if the price of a commodity changes and the demand for two kinds of goods changes at the same time, the two goods are complementary goods, and the cross elasticity of the complementary goods is negative.Seventh, the market supply curve of a commodity is a straight line passing through the origin, and the price elasticity of its supplyYour answer: BSubject score: 0.5Annotation: supply price elasticity =P/Q[1/ (dP/dQ)]=1Eighth, in order to increase revenue, the government decided to levy taxes on the sellers according to the amount of sales. If the government wanted the tax burden to bear on the buyer and did not affect the volume of the transaction as much as possible, then the condition should be thatYour answer: CSubject score: 0.5Score: 0.5Note: the tax burden falls on the less elastic side, ifNinth, the failure of wheat leads to an increase in wheat prices, to be exact, in the processYour answer: ASubject score: 0.5Score: 0.5Note: wheat harvest, wheat supply reduction, the equilibrium quantity corresponding to the new intersection of the supply curve and the demand curve is reduced, it embodies the parallel move, reducing the supply of supply, equilibrium movement alongthe demand curve, demand reduction.The tenth item falls at the same time that both the demand level and the supply level decreaseYour answer: DSubject score: 0.5Score: 0.5Note: as you can see from the graph, the balanced output must be reduced and the price becomes uncertain.The shape of the eleventh - item indifference curve depends onYour answer: ASubject score: 0.5Score: 0.5Note: indifference curves represent consumer preferencesTwelfth, if an indifference curve is horizontal, this indicates that the consumer has reached saturation (X) measured by the cross axis and Y by a vertical axisYour answer: ASubject score: 0.5Score: 0.5Annotation: a horizontal indifference curve indicating that, regardless of the quantity of X products, the utility is the same to consumers. So, X goods are saturated for consumers.The thirteenth - item indifference curve assumes that the marginal rate of substitution of the goods X and Y equals theirYour answer: CSubject score: 0.5Score: 0.5Annotation: this formula can be obtained by definition.Fourteenth, as income and prices change, consumer equilibrium has changed. In the new equilibrium, the marginal utility of various goods is lower than the marginal utility of the original equilibriumYour answer: ASubject score: 0.5Score: 0.5Annotation: according to the law of diminishing marginal utility, the more the two goods consume, the lower the marginalutility, the greater the total utility of the consumer.The fifteenth question assumes that the price of X and Y has been fixed. When MRSXY> PX/PY, the consumer will meet the greatest satisfaction, he willYour answer: ASubject score: 0.5Score: 0.5Annotation: according to the formula, if increasing the consumption of X goods, the increase in marginal utility will be greater than the decrease in marginal utility resulting from the reduction of Y commodity consumption.Sixteenth, the rise in prices of normal items has led to a decrease in demandYour answer: CSubject score: 0.5Score: 0.5Comment: at this time, whether it is the substitution effect or the income effect, the consumption of this kind of goods is reduced by the consumers.The seventeenth question, when APL is positive, but increments,MPL isYour answer: DSubject score: 0.5Score: 0.5Annotation: according to figure, the relation between marginal production and average output, when the marginal production is greater than the average output, the average output increases progressively.In the eighteenth question, the following statement is wrongYour answer: BSubject score: 0.5Score: 0.5Annotation: according to the relation between marginal production and total output, the marginal production decreases, but the total output still increases as long as he is greater than zero.In the nineteenth question, what follows is correctYour answer: DSubject score: 0.5Score: 0.5Note: only the last answer is correct, diminishing marginal returns leads to diminishing marginal rate of substitution between the two elements.The twentieth question, when a manufacturer produces the minimum amount of production at a minimum cost, heYour answer: DSubject score: 0.5Score: 0.5Annotation: for example, a monopolistic manufacturer whose profit maximization point of production is less than the average cost of production at this time.Twenty-first, the short and long term division of economics depends onYour answer: DSubject score: 0.5Score: 0.5Annotation: in economics, in the short run, only the quantity of labor can be adjusted, and in the long run the quantity oflabor and capital can be adjusted.Which of the following statements is true of the twenty-second question?Your answer: BSubject score: 0.5Score: 0.5Note: continuous increase in production may occur at the beginning of decreasing costs, the opportunity cost of the University also includes the income of the work to be abandoned.Twenty-third, the long-term total cost curve is the product of all kindsYour answer: ASubject score: 0.5Score: 0.5Annotation: the trajectory of the lowest cost pointTwenty-fourth, when the law of diminishing returns takes effect, the TVC curveYour answer: DSubject score: 0.5Score: 0.5Annotation:The twenty-fifth problem is the line from the origin and the point of the TC curve, ACYour answer: BSubject score: 0.5Score: 0.5Annotation:In the twenty-sixth question, when the yield is 99 units, the total cost is equal to 995 yuan. When the output increases to A00 units, the average cost is equal to A0 yuan, so that the marginal cost isYour answer: BSubject score: 0.5Score: 0.5Annotation: the total income equals the sum of the marginal revenue, and the total income of 99 units is 1000 of the total income of 995100 units, so the marginal income of the 100thgoods is equal to 5.In the twenty-seventh question, what follows is correctYour answer: BSubject score: 0.5Score: 0.5Annotation: marginal cost increase and marginal revenue decrease are the same reason.Twenty-eighth, the private market is difficult to provide public goodsYour answer: DSubject score: 0.5Score: 0.5Note: a free rider is a public good that does not pay for him, so there is no private offerWhich of the following twenty-ninth questions is the potential solution to the problem of air pollution?Your answer: BSubject score: 0.5Score: 0.5Annotation: as long as the definition of property rights is clear, the externality can be solved through the marketThirtieth, a crowded toll road isYour answer: ASubject score: 0.5Score: 0.5Note: This is both competitive and exclusive, so it's personal.Thirty-first, when the market fails to allocate resources effectively, the ultimate source of the problem is usuallyYour answer: CSubject score: 0.5Score: 0.5Annotation: as long as the definition of property rights is clear, the externality can be solved through the marketThirty-second question, if the output of a competition enterprise doubled, its total incomeYour answer: BSubject score: 0.5Score: 0.5Note: total income = price * output, total competitive market price unchanged, so total revenue doubled.Thirty-third, in the long run, the supply curve of the competing firms is...Your answer: BSubject score: 0.5Score: 0.5Annotation: a fully competitive industry, in the long run, the price should be equal to the marginal cost,The price is higher than the average cost, so the supply curve should be a part of the marginal cost curve above the average cost curveThirty-fourth, if the input needed by production is limited and the industry expands, resulting in an increase in the cost of all firms on the market, then the long-run market supply curve for an item may beYour answer: CSubject score: 0.5Score: 0.5Annotation: as the factor supply is limited, as the demand for the product increases, the demand for this factor increases, the factor price rises, the product cost increases, and the supply curve tilts to the right.In the thirty-fifth question, in the long run equilibrium of the perfect competition market, what statement is wrong about the operating state of an enterprise?Your answer: BSubject score: 0.5Score: 0.5Note: marginal revenue equals marginal cost, and economic profit equals 0.Which of the following thirty-sixth questions is not true about price discrimination?Your answer: CSubject score: 0.5Score: 0.5Note: price discrimination adds to the welfare of consumersThe supply curve of the thirty-seventh question monopolist is Your answer: ESubject score: 0.5Score: 0.5Annotation: there is no supply curve in monopoly marketThirty-eighth, the price charged by the government to force natural monopolies is equal to its marginal costYour answer: DSubject score: 0.5Score: 0.5Annotation: because monopoly market has the characteristics of scale economy, average cost decreases, so marginal cost is less than average cost, and the firm loses according to marginal cost pricing.Thirty-ninth, if the marginal benefit is greater than the marginal cost, a monopolist shouldYour answer: ASubject score: 0.5Score: 0.5Annotation:The fortieth question is that if an oligopoly individual chooses to maximize the profit level of production, the price it collects isYour answer: BSubject score: 0.5Score: 0.5Note: the oligopoly market is between perfect competition and complete monopoly, and the output is less than the perfectly competitive market, but larger than the total monopoly market. The price is less than the total monopoly market, but larger than the perfectly competitive marketTotal score: 20Job Master notation:。
