[填空题]Why is the price of the air conditioner competitive
Because it is ______ than that of similar products in the market.

[单项选择]
Why must air be pumped into the plane
A. The plane can’t fly without air.
B. The plane needs air for its refueling.
C. It meets the passengers’ needs.
D. It meets the pilots’ needs.

[单项选择]The air-conditioner is so energy-efficient that it can save thousands of dollars a year in electricity bill alone.


A. 这台空调是如此的高效能，以致一年的电表账单仅需支付几千美元。
B. 这台空调仅电费一项一年就能节省数千美元，很高效。
C. 这台空气调节器是如此的高效，以致一年就独自节省电费数千美元。
D. 这台空调是如此的高效能，以致仅电费一项，一年就能节省数千美元。

[单项选择]Mr. Smith complained about the （） air-conditioner he had bought from the company.
A. infectious
B. deficient
C. ineffective
D. defective

[单项选择]This new type of air-conditioner is so engery-efficient that it can save the company forty thousand dollars a year.（）
A. 这种新型空调功率很高，公司电费一年高达四万美元。
B. 这种新型空调高效节能，一年能为公司节省四万美元。
C. 这种新型空调效率很高，公司一年节省了电费四万美元。
D. 这种新型空调效率很高，公司一年仅需支付电费四万美元。

[单项选择]A. He can’t afford to buy an air conditioner now. B. He’s not sure how much an air conditioner costs.
C. He will buy an air conditioner later this week. D. He got the money he has saved a long time burnt.

[简答题]一男一女讨论租房 1-10填空题： window air conditioner

[简答题]It is suggested that the air conditioner __________________ (要安装在窗户旁).

[单项选择]Cost as a Factor in Supply In a purely competitive market, the supplier of goods and services has no control over the market price, because he produces too little to influence market conditions. With no difference between his products and the products________(51) his competitors, he will sell nothing if he charges above the market price and he will sell all if he charges at or __________(52) the market price. However, in considering the price, he must take the ____________(53)of production into consideration. There are times when he may be willing to sell below his cost. This might happen when prices tumble for__________(54) he believes will be a short time. However, no business person can __________(55)to lose money for a prolonged period. He must be constantly __________(56)of his costs in relation to the market price if he is to competes successfully and earn a profit. Many people have the impression that as production increases, costs per unit decrease._________(57)mass productio
A. that
B. why
C. what
D. if