《周礼》载“金有六齐（配方），六分其金而锡居一，谓之钟鼎之齐。”这反映了（ ）
A．甲骨文的雕刻技巧
B．青铜器的铸造工艺
C．金文的形成与发展
D．铁农具的制造技术
答案：B
“金有六齐。六分其金而锡居一，谓之钟鼎之齐。五分其金而锡居一，谓之斧斤之齐。四分其金而锡居一，谓之戈戟之齐。三分其金而锡居一，谓之大刃之齐。五分其金而锡居二，谓之削杀矢之齐。金、锡半，谓之鉴燧之齐。” “金”可泛指所有金属，这段话中特指铜锡合金，即青铜，意思是用青铜冶炼不同种类的器物有六种配方。
| Stress is with us all the time. It comes from mental or emotional activity as well as physical activity. It is unique and personal to each of us. So personal, in fact, that what may be relaxing to one person may be stressful to another. For example, if you’re a busy executive who likes to keep occupied all of the time, "taking it easy" at the beach on a beautiful day may be extremely frustrating, nonproductive, and upsetting. You may be emotionally distressed from "doing nothing." Too much emotional stress can cause physical illnesses such as high blood pressure, ulcers, or even heart disease. Physical stress from work or exercise is not likely to cause such ailments. The truth is that physical exercise can help you to relax and to better handle your mental or emotional stress. |
Physical problems caused by emotional stress can appear as all of the following EXCEPT ______.
A．ulcers
B．pregnancy
C．heart disease
D．high blood pressure