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问题 单项选择题 A3/A4型题

男，58岁。心悸、手抖3年，加重1月。体检：P110次／分，BP160/60mmHg，消瘦，皮肤潮湿，甲状腺可触及，可闻及血管杂音，颈静脉无怒张，心界不大，心率134次／分，律绝对不整，心音强弱不等，肺、腹（-），双下肢不肿。

该病人如选用放射性碘治疗，其长、短期并发症最可能分别是（）

A.甲状腺功能减退症、放射性甲状腺炎

B.甲亢复发、放射性甲状腺炎

C.心功能恶化、甲亢危象

D.甲状腺功能减退症、甲状腺肿加重

E.致癌、甲状腺炎

答案

参考答案：A

单项选择题 B1型题

下列哪种食品添加剂可以用于抗氧化（）。

A.苯甲酸

B.丁基羟基茴香醚（BHA.

C.亚硫酸氢钠

D.亚硫酸钠

E.偶氮甲酰胺
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单项选择题

Most plants can make their own food from sunlight, (1) some have discovered that stealing is an easier way to live. Thousands of plant species get by (2) photosynthesizing, and over 400 of these species seem to live by pilfering sugars from an underground (3) of fungi(真菌). But in (4) a handful of these plants has this modus operandi been traced to a relatively obscure fungus. To find out how (5) are (6) , mycologist Martin Bidartondo of the University of California at Berkeley and his team looked in their roots. What they found were (7) of a common type of fungus, so (8) that it is found in nearly 70 percent of all plants. The presence of this common fungus in these plants not only (9) at how they survive, says Bidartondo, but also suggests that many ordinary plants might prosper from a little looting, too.

Plants have (10) relations to get what they need to survive. Normal, (11) plants can make their own carbohydrates through photosynthesis, but they still need minerals. Most plants have (12) a symbiotic relationship with a (13) network of what are called my corrhizal fungi, which lies beneath the forest (14) . The fungi help green plants absorb minerals through their roots, and (15) , the plants normally (16) the fungi with sugars, or carbon with a number of plants sharing the same fungal web, it was perhaps (17) that a few cheaters—dubbed epiparasites—would evolve to beat the system. (18) , these plants reversed the flow of carbon, (19) it into their roots from the fungi (20) releasing it as "payment.\

19（）

A.taking

B.grasping

C.sucking

D.catching
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