正确答案: E

与内因子有关

题目：关于铁吸收的错误叙述是 （　　）

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学习资料的答案和解析：

[单选题]From here, we can see the bridge ________ construction．

by

解析：Below在下面，under在……之下、在……情况中，by经过、在……之旁，with关于、由于。选项C是正确的。【句子大意】从这里我们可以看到正在修建中的大桥。

[单选题]The differences between Chinese and western society can________misunderstandings．

create

解析：考查词义的辨析。Course课程、过程，cause引起、造成，create引起、产生，rise上升、起立。选项B和选项C都有引起的意思，但选项B不是动词原型，不能跟在can后。所以，选项C是正确的。【句子大意】中国和西方的不同会引起误解。

[单选题]_________

根据以下内容，回答下面的题目。Insure means to protect _51_ a loss of money．Most people can budget their money so that their income will cover expected expenses _52_ food, clothing, housing, and public services．But, there is no way to know _53_ who will suffer a crisis (危机) such as a serious illness, fire, flood, or a car accident．Such crises usually _54_ great expense．Even if people could predict crises, it would be hard to save enough money to _55_ the expenses．Insurance is a system _56_ a company collects money from many individuals and then pays certain expenses whenever one of those insured individuals is faced with a certain crisis．An insurance policy _57_ how much the insurance costs and how much the company will pay when a policy holder is faced with a certain crisis．There are many different kinds of insurance, _58_ hospital, motor-car and fire．Insurance can be rather expensive but most people buy insurance of some kinD．Insurance is something _59_ people buy and hope they will _60_ need．_________

cover

[单选题]根据下列短文，回答{TSE}题。　　There are various in which individual economic units Can interact with one another．Three basic ways may be described as the market system，the administered system and the traditional system．In a market system individual economic units are free to interact among each other in themarketplace．It is possible to buy commodities from other economic units or sell commodities tothem．In a market，transactions may take place via barter or money exchange．In a barter economy，real goods such as automobiles，shoes and pizzas are traded against each other．Obviously，finding somebody who wants to bade my old Car in exchange for a sailboat may not always bean easy task．Hence，the introduction of money as a medium of exchange eases transactions considerably．In the modern market economy，goods and services are bought or sold for money．　　An alternative to the market system is administrative control by some agency over all trans．actions．This agency will issue edicts or commands as to how much of each good and service should be produced，exchanged，and consumed by each economic unit．Central 01anaing may be one way of administering such an economy．The central plan，drawn up by the government,shows the amounts of each commodity produced by the various firms and allocated to differenthouseholds for consumption．This is an example of complete planing of production，consump—tion，and exchange for the whole economy．　　In a traditional society，production and consumption paUerns are governed by tradition：everyperson’S place within the economic system is fixed by parentage，religion and custom．　　　　　Transac—tions take place on the basis of tradition，too．People belonging to a certain group or caste mayhave an obligation to care for other persons，provide them with food and shelter，care for theirhealth，and provide for their education．Clearly，in a system where every decision is made on thebasis of tradition alone，progress may be difficult to achieve．A stagnant society may result．{TS}What is main purpose of the passage?

To outline contrasting types of economy．

[单选题]内分泌系统的功能是调节机体的（　　）

生长

[多选题]维护血管内外和细胞内外水平衡的主要因素是（　　）

血浆与组织液的晶体渗透压

血浆与组织液的胶体渗透压

[单选题]吸入气中C02浓度达20%时，机体会出现（　　）

呼吸抑制