问题
单项选择题 A1/A2型题
患者，男性，42岁。身高170cm，体重90kg，1周前检查身体时在不同时间连续多次测得血压为160/90mmHg，为控制患者体重所采取的措施不应包括（）。
A.减少每日总热量摄入
B.细嚼慢咽，避免过饱
C.吃减肥药
D.坚持散步、太极拳等运动
E.低脂、低胆固醇饮食
答案
参考答案：C
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患者，男性，42岁。身高170cm，体重90kg，1周前检查身体时在不同时间连续多次测得血压为160/90mmHg，为控制患者体重所采取的措施不应包括（）。
A.减少每日总热量摄入
B.细嚼慢咽，避免过饱
C.吃减肥药
D.坚持散步、太极拳等运动
E.低脂、低胆固醇饮食
参考答案：C
| About fifty years ago, plant physiologists set out to grow roots by themselves in solutions in laboratory flasks. The scientists found that the nutrition of isolated roots was quite simple. They required sugar and the usual minerals and vitamins. However, they did not require organic nitrogen compounds. These roots got along fine on mineral inorganic nitrogen. Roots are capable of making their own proteins and other organic compounds. These activities by roots require energy, of course. The process of respiration uses sugar to make the high energy compound ATP, which drives the biochemical reactions. Respiration also requires oxygen. Highly active roots require a good deal of oxygen. The study of isolated roots has provided an understanding of the relationship between shoots and roots in intact plants. The leaves of the shoots provide the roots with sugar and vitamins, and the roots provide the shoots with water and minerals. In addition, roots can provide the shoots with organic nitrogen compounds. This comes in handy for the growth of buds in the early spring when leaves are not yet functioning. Once leaves begin photosynthesizing, they produce protein, but only mature leaves can "export" protein to the rest of the plant in the form of amino acids. |
The use of the phrase "comes in handy" underlined in Paragraph 2 indicates that the process is ______.
A．unavoidable
B．predictable
C．necessary
D．successful