首页
登录
职称英语
[img]2019m9x/ct_eyyjsdz2019j_eyyjsdreadb_0172_201909[/img] Allergy has become
[img]2019m9x/ct_eyyjsdz2019j_eyyjsdreadb_0172_201909[/img] Allergy has become
游客
2024-08-20
5
管理
问题
Allergy has become more and more common over the last 30 years. It is a reaction that occurs when the immune system has a strange and unnecessary reaction to a substance which is normally harmless, such as pollen (花粉)or peanuts. The immune system is there to protect the body against outside attackers, including viruses, bacteria and parasites. To defend your body against an attacker, the immune system remembers these dangerous micro-organisms and attacks them if it meets them again. This work is done by antibodies. The immune system in allergy sufferers makes antibodies against harmless substances, because it mistakenly believes them to be dangerous.
【B1】______ Sometimes people can eat nuts for years and then suddenly become allergic to them. What has happened is that the immune system has now decided the substance is dangerous and has made an allergy antibody. This antibody then attaches itself to cells, which contain histamine (组织胺). When the antibodies meet the allergen the next time, they attempt to destroy it. As they do that, the surface of the cells is broken, and histamine is released. The histamine and other chemicals inflame the tissues. This leads to the symptoms of allergy, such as swelling, rashes, sneezing and breathlessness.
【B2】______Some people are bom with the ability to make lots of allergy antibodies, and they are more likely to develop allergies and allergic disorders such as hay fever and asthma.
【B3】______ We eat more processed foods, with a wide range of additives and colourings; more and more people have central heating and double glazing, making our houses warmer and less draughty.
【B4】______At one time our immune systems were kept busy fighting off disease and trying to win the battle for health, but, antibiotics have reduced the amount of work our immune systems have to do. Now experts think they may direct spare energy to harmless substances. In other words, our immune systems have become oversensitive.
【B5】______ Sufferers may be given medicine to control symptoms, and they may also be offered tests to find out what substances trigger an allergic reaction so that they can avoid contact with these substances in future.
Questions 61-65
Complete the passage with the following sentences. There are two extra sentences that you do not need to use.
A. There may also be a link between allergies and antibiotics.
B. Allergies run in families.
C. A good deal of research is being devoted to finding a cure for allergies.
D. One-third of us are affected by allergy at some point in our lives.
E. Experts believe more people have developed allergies because of changes in our lifestyle which have exposed us to more allergens.
F. In the UK, five per cent of children suffer from food allergy.
G. An allergic reaction may not happen the first time a sufferer meets an allergen. [br] 【B2】
选项
答案
B
解析
该空后面提到“有些人天生就有能力产生大量的过敏抗体,而且他们更有可能患上过敏和过敏性疾病,如花粉症和哮喘”。由此可知,该空应该与过敏是遗传性疾病有关,符合条件的只有B项(过敏是家族遗传的。)
转载请注明原文地址:https://tihaiku.com/zcyy/3727406.html
相关试题推荐
[img]2019m9x/ct_eyyjsdz2019j_eyyjsdreadd_0184_201909[/img]Manypeoplecompla
[img]2019m9x/ct_eyyjsdz2019j_eyyjsdreadd_0184_201909[/img]Manypeoplecompla
[img]2019m9x/ct_eyyjsdz2019j_eyyjsdreadd_0184_201909[/img]Manypeoplecompla
[img]2019m9x/ct_eyyjsdz2019j_eyyjsdreadc_0178_201909[/img]In2004,aHarvard
[img]2019m9x/ct_eyyjsdz2019j_eyyjsdreadc_0178_201909[/img]In2004,aHarvard
[img]2019m9x/ct_eyyjsdz2019j_eyyjsdreadb_0172_201909[/img]Allergyhasbecome
[img]2019m9x/ct_eyyjsdz2019j_eyyjsdreadb_0172_201909[/img]Allergyhasbecome
Whichcircleshouldreplacethequestionmark?[img]2019m9x/ct_eyyjsdz2019c_eyyj
[img]2019m9x/ct_eyyjsdz2019c_eyyjsdcloze_0048_201909[/img]Everybodymakesla
[img]2019m9x/ct_eyyjsdz2019c_eyyjsdcloze_0048_201909[/img]Everybodymakesla
随机试题
AUKsupermarkethasbecomethefirstintheworldtoletshopperspayforg
WhichofthefollowingstatementsisINCORRECT?[br][originaltext]Thegove
GlobalEconomyatLowEbbCausesAmericanRateofUnemploymentUpswing
只有两家公司生产A产品,且两家公司的产品成品无差异。A产品的成本是1美元,销售价
禁止生产、经营使用国家重点保护野生动物及其制品制作的食品。
患者,女,38岁,停经8个月,小腹疼痛拒按,得热痛减,四肢不温,舌紫黯,或边有瘀
某教研组集体备课,教师围绕“教材使用”展开讨论。下列观点正确的是()。A.教
粪便标本可进行直接镜检的病原菌是A、大肠埃希菌B、痢疾志贺菌C、结肠炎耶尔森
李先生想要办理住房贷款,目前他可以到()办理该业务。A.中国银行 B.中国进
施工单位与建设单位在签订拆除工程的施工合同时,应签订安全生产管理协议,明确双方的
最新回复
(
0
)