下列( )组养分不是人体内的能源物质,但对维持正常生命活动却很重要。 A.糖类、

题型:选择题

问题:

下列(    )组养分不是人体内的能源物质,但对维持正常生命活动却很重要。

A.糖类、维生素

B.维生素、无机盐

C.维生素 、蛋白质

D.矿物质、蛋白质

考点:食物中的营养物质
题型:选择题
简便方法计算:
1997
1998
×1999
41
1
3
×
3
4
+51
1
4
×
4
5
238÷238
238
239
题型:选择题

“In only six days I lost seven pounds of weight.”

“Two full inches in the first three days!”

These are the kinds of statements used in magazine,newspaper,radio and television ads,promising new shapes and new looks to those who buy the medicine or the device. The promoters of products say they can shape the legs,slim the face,smooth wrinkles,or in some other way to add to beauty or desirability.

Often such products are nothing more than money­making things for their promoters. The results they produce are questionable,and some are dangerous to health.

To understand how these products can be legally promoted to the public,it is necessary to understand something of the laws covering their regulation. If the product is a drug,FDA(Food and Drug Administration)can require proof under the Food,Drug,and Cosmetic Act that is safe and effective before it is put on the market. But if the product is a device,FDA has no authority to require premarketing proof of safety or effectiveness. If a product already on the market is a danger to health,FDA can request the producer or distributor to remove it from the market voluntarily,or it can take legal action,including seizure(查封)of the product.

One notable case a few years ago involved an electrical device called the Relaxacisor,which had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through contact pads. FDA took legal action against the distributor to stop the sale of the device on the grounds that it was dangerous to health and life.

Obviously,most of the devices on the market have never been the subject of court proceedings(法律诉讼),and new devices appear continually. Before buying,it is up to the consumer to judge the safety or effectiveness of such items.

小题1:It can be inferred that the ads mentioned in the text are________.

A.objective

B.costly

C.unreliable

D.illegal小题2:FDA can ask for the proof of safety and effectiveness of a product ________.

A.if it is a drug

B.if it is a device

C.if its consumers make complaints

D.if its distributors challenge FDA's authority小题3:The Relaxacisor is mentioned as________.

A.a product which was designed to produce electricity

B.a product whose distributor was involved in a legal case

C.a successful advertisement of a beauty product

D.an example of a quality beauty product小题4:The author intends to________.

A.make consumers aware of the promoters' false promises

B.show the weakness of the law on product safety

C.give advice on how to keep young and beautiful

D.introduce the organization of FDA

题型:选择题

心包积液,下列哪一项不是其典型X表现()

A.心影普遍性向两侧扩大,呈烧瓶样或球状

B.上腔静脉影增宽

C.心影在短期内迅速增大合并肺淤血

D.心脏搏动明显减弱而主动脉搏动正常

E.主动脉影变短

题型:选择题

与细菌核蛋白体的50S亚基结合,抑制细菌蛋白质的合成,首选于军团菌病的是()

A.罗红霉素

B.万古霉素

C.克林霉索

D.红霉素

E.多黏菌素

题型:选择题

厨房设计要注意哪些事项?

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