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医学
A、Patients treated with venom were stung less frequently. B、Immunotherapy was effective for all patients. C、Immunization took pl
A、Patients treated with venom were stung less frequently. B、Immunotherapy was effective for all patients. C、Immunization took pl
admin
2013-12-14
55
问题
A team of researchers has found that immunizing patients with bee venom instead of with the bees’ crushed bodies can better prevent serious and sometimes fatal sting reactions in the more than one million Americans who are hypersensitive to bee stings. The crushed-body treatment has been ineffective. The serum made from the crushed bodies of bees produced more adverse reactions than the injections of the venom did.
The research compared results of the crushed-body treatment with results of immunotherapy that used insect venom and also with results of a placebo. After six to ten weeks of immunization, allergic reactions to stings occurred in seven of twelve patients treated with the placebo, seven of twelve treated with crushed-body extract, and one of eighteen treated with the venom.
Questions 26-30 are based on the passage you have just heard.
26. What is the main topic of the passage?
27. What can we learn about the traditional treatment for bee sting according to the researchers?
28. What was the most successful treatment described in the passage?
29. How should the treatment referred to in the passage be administered?
30. What did the results of the experiment indicate?
选项
A、Patients treated with venom were stung less frequently.
B、Immunotherapy was effective for all patients.
C、Immunization took place in seven out of twelve patients.
D、The traditional treatment was as effective as the placebo.
答案
D
解析
免疫接种6到10周后,发生过敏反应的情况是,传统方法与安慰剂疗法均为7/12,而蜂毒免疫血清疗法只有1/18。可知D正确。
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