函数f(x)=lg(4-x)x-2 的定义域是______.

题型:填空题

问题:

函数f(x)=
lg(4-x)
x-2
的定义域是______.
考点:对数函数的解析式及定义(定义域、值域)
题型:填空题

It may be the happiest place on Earth, but the Magic Kingdom has become a little more restrictive(限制的) for the children hoping to enjoy Disney’s US parks on their own. Beginning on March 23 of this year, anyone under the age of 14 must go there with someone over 14. If a worker who works at the front gates sees a child who looks younger than 14 without a person who looks older than that, he will have a talk with the tourist. If he is sure the tourist is under 14, his parents will be contacted to pick them up.

Before this, Disney did not have any age restrictions(限制) for tourists. The new rule was set up after Disney conducted a survey of its tourists and contacted various child welfare association(福利机构). They both thought it was necessary to have the age requirement. The American Red Cross suggested that 14 is the minimum(最小的) age for babysitters(保姆).

News of the age restriction comes nearly a week. A child on vacation with his father and mother fell into a pool and died at Disneyland Pop Century Resort(度假村). Anthory Johnson was swimming in the hotel pool with a group of children including his little brother and a cousin at about 9:30 pm when the accident happened. Witnesses said the teen was playing in the water on Sunday evening without family members. A cousin found him under water around 9:10 pm and told others in the group who pulled him out of water. Orange Country Sheriff’s officials said after Anthony was taken to nearby hospital, he died several days later.

小题1:How does the worker know the child is under 14?

A.By contacting with his parents.

B.By seeing if the child comes on his own.

C.By seeing if the child comes with his parents.

D.By looking at the child’s appearance and talking with him.小题2:What ISN’T the reason for setting up the new rule?

A.14 is the minimum age for babysitters.

B.Children like to play in Disney’s US parks with their parents.

C.Tourists think it’s necessary to have the age requirement.

D.A child on vacation with his parents died in a pool at Disney’s Pop Century Resort.小题3:What’s the main idea of this passage?

A.The happiest place for children.

B.A new rule of age requirement about children who go to Disneyland.

C.A survey of age requirement about children who go to Disneyland.

D.A child who fell into a pool and died at Disneyland.

题型:填空题

其他合纤短纤其他机织印染用布

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下列哪种消化液对蛋白质食物的消化不起作用(  )

A.唾液

B.胃液

C.胰液

D.肠液

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民间叙事长诗“米拉尕黑”、“诗斯尼比”等民间艺术珠玑属于哪个民族?()

A.藏族

B.蒙古族

C.东乡族

D.傣族

题型:填空题

生物酶抛光需要()配合实现

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