农业生态系统模式沼气、猪、鸡、玉米、粪便、沼气池图形在一个人-考网

农业生态系统模式沼气、猪、鸡、玉米、粪便、沼气池图形

中学教师招聘,历年真题,2016年教师招聘考试《中学生物》真题精选4

在一个人工农业生态系统中，玉米、鸡、猪、人组成的食物网如图所示。鸡、猪、人的粪便以及玉米秸秆通过沼气池发酵，产生的沼气用于照明和做饭，沼渣可以做肥料。请分析回答以下问题：
(1)此生态系统中能量流动的起点从__________开始。
(2)在此生态系统中最基本、最关键的生物组成成分是__________。鸡和玉米之间是__________关系。
(3)在此生态系统中能将鸡、猪、人的粪便以及玉米秸秆通过沼气池发酵产生沼气的微生物，在生态系统成分中属于__________。
(4)此生态系统一共有__________条食物链，写出人获取能量最多的食物链__________。
(5)如果工厂排放的有害物质如铅、汞等进入此生态系统，这些有害物质可以通过__________在生物体内不断积累，使其浓度随着消费者级别的升高而逐步增加，这种现象叫生物富集。

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答案： (1)生产者光合作用固定太阳能。(2)生产者；捕食。(3)分解者。(4)3；玉米一人。(5)食物链。

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2016年教师招聘考试《中学生物》真题精选4

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根据以下材料，回答题

If you don′t think a phone is the rightgift for a lover, the smart choice this year is a smart phone.

For people who don′t read instructions

The easiest-to-use phone is the iPhone. It′sthat has pushed it to the No.1 selling position, surpassing the Motorola Razr.The iPhone′s touch screen is easy to operate and it′s also easy to customize (用户化). The iPhone can run allsorts of applications such as those help you to lose weight, identify a song onthe radio, find a restaurant or do many other things.

For the futurist

The T-Mobile G1 is very popular as it is thefirst phone to offer a Google browser, meaning that you′re getting the real webon your phone, but it′s the phone′s potential that qualifies it for the futurist.The exciting applications are interesting, but they don′t always work smoothly.Sometimes it is hard to use the applications it comes with. The system shouldimprove as it becomes more popular, so it holds great promise. With fewrestrictions on the design of applications for the phone,

the G1 could be the first phone toincorporate (整合) some of the coolest.

For the road warrior

The new BlackBerry Storm is something likethe equivalent (等同物) of a mullet--a business up front, party in the back. It stillincorporates the serious mail and organization features that have endeared (使受钟爱) these phones to business people. The 3.25-inch is bright anddetailed and it′s a decent size for watching videos on the go.

For the Luddite (反对技术进步的人)

For those who can′t handle buttons and newfeatures, there is the Samsung Jitterbug Dial. Some people are Luddites whojust want a few large buttons to make calls. That′s it, just calls. That makesit even easier to use an iPhone.

What would be the best title forthe passage (no more than 6 words)

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MP3（　　）。