问题
单项选择题
某企业发生的下列经济业务中，可以使用现金支付的有( )。
A．购买原材料1200元
B．支付下半年度房屋租赁费6000元
C．支付职工工资50000元
D．预付购货款20000元
答案
参考答案：C
解析： 根据《现金管理暂行条例》规定，企业可以以现金支付职工工资。
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某企业发生的下列经济业务中，可以使用现金支付的有( )。
A．购买原材料1200元
B．支付下半年度房屋租赁费6000元
C．支付职工工资50000元
D．预付购货款20000元
参考答案：C
解析： 根据《现金管理暂行条例》规定，企业可以以现金支付职工工资。
| 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. |
Roots have the ability to ______.
A．make proteins
B．obtain fresh air
C．produce inorganic nitrogen
D．carry out activities without energy