103％超速保护系统由（）动作，关闭（）。

女，28岁，2小时前出现上腹部疼痛，伴恶心，无呕吐，在诊断急性阑尾炎上具有重要意义的是（）。

A.发热

B.白细胞升高

C.脐周有压痛

D.压痛固定在右下腹

E.脐周与右下腹均有压痛

LANGUAGES Canada，a new Canadian national organization of public and private language training programs，was started recently to ensure that language training in Canada is of high quality，Canada News Wire has reported．

Canada has developed its language-training programs for over forty years without a comparatively uniform（adj. 一致的；相同的） quality standard before Languages Canada adopted（采用） a complete system of rigorous standards that apply equally to all public and private schools in Canada To qualify（取得资格；具备合格条件），a school is evaluated in a number of categories including curriculum，teacher qualifications，student services，student admissions，marketing，promotion，facilities and administration． The quality standards guarantee that international students who come to Canada to learn English or French can expect to receive a uniform level of excellent instruction．．

So far，a total of 144 language–training programs，public and private，English and French，have met the standards． They will have to re-qualify in three years． About two dozen other schools failed to meet all standards and may be re-evaluated in the future．

Canada’s language training sector accounts for（数量占…） about 15 percent of the market share of global language training business Canada ranks third among destinations for English language training after UK and US． Calum Mackechnie，President of Languages Canada and President of York University’s English Language Institute，says if Canada wants to fully take advantage（利用） of the economic potential（潜力） of its language-training sector，it needs to make sure the world knows what the country has to offer．

46．What do we know about Languages Canada?

A．It is a language training school．

B．It has a history of over 40 years．

Ｃ．It has many branches all over the world．

Ｄ．It is a new Canadian national organization．

47．______________ is not taken into consideration when evaluating a school．

A．Curriculum                                     B．Teacher qualifications

C．School size                                    Ｄ．Administration

48．The underlined word “rigorous” in Paragraph 2 probably means “___________”．

A．strict               B．similar                    C．different                Ｄ．The same

49．Which of the following statements is WRONG?

A．So far, 144 language-teaching programs have met the standards．

B．UK ranks second among destinations for English language training．

C．About 24 other schools didn’t meet all standards．

D．Languages Canada was launched to ensure high-quality language training in Canada．

50．What’s the main idea of this passage?

A．Canada sets English training standards across the country．

B．Canada is a big language-training country．

C．Canada hopes to make more money from language training．

D．Canada has a long history in developing its language-training capacity．

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一项孤立的标准，即使很完整，水平很高，标准化的目的也是不容易实现的，还必须把与之相关的一系列标准都建立起来，形成一个系统，发挥系统的整体作用，这个系统再与其他系统相结合、配套，形成更大的系统。

案例描述：针对某2000人的社区进行了一次食物频率膳食调查，调查了33大类食物的摄人频率和平均每次摄入的食物量。请根据上述情景回答以下问题

该食物频率膳食调查具体属于哪种调查？