问题
单项选择题
一位顾客在超市花2.5元人民币买了块香皂。在这里，人民币替换金属货币执行的只能是（）
A.价值尺度
B.流通手段
C.贮藏手段
D.世界货币
答案
参考答案：B
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一位顾客在超市花2.5元人民币买了块香皂。在这里，人民币替换金属货币执行的只能是（）
A.价值尺度
B.流通手段
C.贮藏手段
D.世界货币
参考答案：B
| 任务型阅读。阅读下面短文，根据所读内容在表格中的空白处填入恰当的单词。注意：每个空格 只填一个单词。 | |||||||||||
| Forgetting little things happens every day, but it can lead to a bigger problem, someday. To improve your memory, both mental (脑力的) and physical exercise are necessary. Physical exercise can help to supply enough oxygen (氧气) to your brain, and mental exercise ensures (确保) that your mind can be active all the time. An important activity is deep breathing. Try out some deep breathing relaxation techniques which relax the mind. Repetition of a particular activity also helps to improve memory. You must also get the right amount of sleep (6-8 hours) every day. Remember, sleeping too much can have the same bad effect on your memory. The most important thing to remember well is to get just enough sleep, which affects not only your brain functions, but also your energy levels throughout the day. Getting things organized in and around your house or your office is one of the best ways to improve memory. The same goes for those who are studying. Write down your study materials well, and it will be easier to study and remember all the materials when you're preparing for a project or a test. Eat healthy food, including some food known as brain food, which includes nuts, fish, milk, eggs, whole grains, etc. All these foods, eaten in a healthy way, will help your brain function well, improve your memory and make you sharper. Avoid deep-fried, heavily salted or heavily sugary food. Also, never drink alcohol or give up drinking if you do want to improve your concentration and memory. With these tips, you can improve your memory. | |||||||||||
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