起重机各移动部分均采用（）作为行程定位保护。 A.反接制动 B.能耗制动 C.限位开

阅读理解

     [1] World Consumer Rights  Day is celebrated annually by consumer organizations worldwide. It

commemorates the historic declaration on March 15,1962 by John F．Kennedy,the former US President,

of the basic Rights of consumers,which include: "the right to  safety","the right to be informed","the right to

choose",and "the right to be heard"．

     [2]This_declaration_has_led_to_international_recognition_by_governments_and_the_United_Nations_

that_all_citizens,regardless of their_incomes_or_social_standing,have_certain_basic Rights_as_consumers.Officially,World Consumer Rights Day was first observed on March 15,1983 and has since become an

important occasion for mobilizing citizen action,with recognition of consumer rights taking off around the

world.On April 9,1985,the United Nations Assembly General Assembly adopted the UN Guidelines for

Consumer Protection that provide a framework for strengthening national consumer protection policies

around the world.

     [3] The  guidelines included  Kennedy's  four basic consumer rights plus another four:  the right to

satisfaction of basic needs；the right to redress (赔偿)；the right to education；and the right to a healthy

environment.Currently,the fundamental consumer rights are recognized globally.

     [4]World Consumer Rights Day normally has a theme associated with an activity or development that is

relevant to consumers. Whatever their objectives, they share the same underlying aim of  bringing about

important and needed benefits for consumers.

     [5] In recent years, progress has been made for recognition and protection of  consumer rights in

developing countries.At least,March 15 is a day when consumers are filled with pride and satisfaction.

However,there are many reports on violation of consumer rights by unethical  marketing practices.

1．What is the main idea of the passage?(Please answer within 10 words.)

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2．What was John F．Kennedy mentioned in the first paragraph?(Please answer within 15 words.)

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3．Which of the sentence in the passage can be replaced by the given one?

Presently,countries around the world acknowledge the basic consumer rights.

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4．Please translate the underlined sentence in the second paragraph into Chinese.

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5．What do you think will follow the passage?(Please answer within 20 words.)

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儿童过敏性紫癜主要为哪种免疫球蛋白介导的疾病（）

A.IgG

B.IgE

C.IgM

D.IgA

E.IgD

发生高热惊厥的常见年龄是

A．新生儿

B．1～6个月

C．6个月～5岁

D．3～7岁

E．7～14岁

乌尔盖湿地干枯的主要原因是（）。

A、降雨量减少

B、过渡放牧

C、人工截流

D、气候变化

荒漠生物群落是由______占优势的地面不郁闭的一类生物群落。