问题 单项选择题

Jet lag is back on the agenda for business travelers, especially as long-haul international traffic picks up again.

There is endless advice online about jet lag. Drugs are frequently mentioned, and a recent favorite is Nuvigil, used to treat excessive sleepiness. Nuvigil’s manufacturer, Cephablon, has so far not succeeded in obtaining government approval for its plan to market the drug as a remedy forjet lag.

But the approach I hear most often from long-haul travelers involves diet and preparation. " Why would you take a pill that your body then has to shake off " said Lynne Waller Scanlon, the author, with Charles F. Ehret, of Overcoming Jet Lag, which was a best seller in the mid-1980s but went out of print until she revised and republished it last year under a snappier title, The Cure for Jet Lag.

The book lays out a treatment system for jet lag based on pre-trip diet and conditioning to reset the body’s internal clock. The book suggests resetting the body clock so that it will be in sync with the time at the destination. One to three days before a trip, the authors suggest low-calorie meals. In flight, avoid or strictly limit alcohol, and use coffee or tea to persuade the body clock that it’s daytime. If it’s morning after flying all night, resist sleep and " flood your eyes with daylight " , they suggest.

While all long-haul travel can cause normal fatigue, travel across time zones causes the body to react with the most pronounced effects of jet lag, including disorientation and a general sense of discomfort.

In the last few years, the global airlines have put more emphasis on accommodating the need for in-flight sleep—at least in the business and first—class cabins, where international airlines earn most of their revenue. But at the same time, international airlines also promote extensive in-flight entertainment selections, as well as high-end menus, including quality wine lists, in premium classes. Indulging in these would seem to work against dietary treatment to combat jet lag. But Ms. Scanlon says recovery is nevertheless attainable.

" What do you do if you can’t implement this program ahead of the trip, or if you’ve blown it and had a complete debauch on the plane " she said, " Well, when you get off that plane, you get on the program right away. It may not be perfect, but you will feel much, much better.

According to the passage, the most popular way for treatingjet lag is probably()

A. taking drugs

B. adjusting diet and preparing before hand

C. consulting a doctor

D. drinking coffee orteainflight

答案

参考答案:B

解析:

细节题。根据第三段第一句“然而我从长途旅客那里最常听到的方法却是饮食和提前准备”可知,虽然前文介绍了网上建议和服用药物,但是最受长途旅行欢迎的方法却是饮食和提前准备。联系下文《时差疗法》一书中介绍的方法,也可以得出这个结论。所以B为正确答案。注意选项D虽然也属于“饮食和提前准备”的一部分,但并不全面,所以也是错误选项。

材料分析题

近年来,受我国空调市场巨大的消费需求空间和相对高利润率的刺激,许多企业争相进入空调市场,致使整个行业生产规模近年来以每年30%~40%的增长率猛增。对此,某中学高一(1)班学生在国庆期间就我国空调产生、销售情况进行了调查,其主要内容如下:

探究一:由于空调生产规模的不断扩大,导致了空调价格不断下降,从而使电风扇的销售量不断减少。

(1)请你也参与研讨,消费者对某一商品的需求量,是否会受其他商品价格变动的影响?

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探究二:在激烈的市场竞争中,海尔、格力等空调企业,不断提高劳动生产率,加强科学管理,科技创新,开发科技含量高、质量好,能更好地满足市场需求的产品,企业经营效益不断提高。而有的企业盲目跟风,不仅没有核心技术,而且管理混乱,濒临破产。

(2)请你联系材料说明价格变动是如何影响生产的。

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单项选择题