SOMEWHERE, the spirit of Johann Elert Bode is smiling. Bode was a German astronomer who popularised a mathematical rule, which came to be known as Bodes law, in a book published in 1772. According to Bodes law, there is a hidden pattern in... 详情>>
2019-07-12
Devils Lake is where I began my career as a limnologist in 1964, studying the lakes neotenic salamanders and chironomids, or midge flies. Back then, the lake covered about 80 square kilometers, had a maximum depth of about 3 meters and held... 详情>>
2019-07-12
TECHNOLOGY advances not only through new inventions, but also by the imaginative application of old ones. And one of the most ancient forms of scientific investigation, the post-mortem autopsy, may be ripe for just such a technological upgr... 详情>>
2019-07-12
Do you like to watch the sky? Do you prefer the sky during the day or at night? Have you learnt any courses about stars or planets? Where is a good place to watch stars? 这是一个比较抽象的话题 所以我们总会觉得无话可说... 详情>>
2019-07-12
Describe a situation you waited for something. You should say: Where this place was When this happened Who you were with and explain why you had to wait for it. 想得到考官的认可就要有充分的延伸 但想给考官留下深刻的印... 详情>>
2019-07-12
Park/public garden Are there many parks or public gardens where you live (or, in your hometown)? Do you often/ ever go to a park or a (public) garden? When do people go there? Do you think parks and public gardens are important to a city? (... 详情>>
2019-07-12
animals 1. Whats your favorite animal? 2. Why do you like this animal? 3. Do you like keeping a pet? （why/why not?） 4. Do people in your country like to keep pets? What kind of pets they keep? 动物的话题我们都比较熟悉 无论是... 详情>>
2019-07-12
历史事件 Describe an event in history in your country Where it happened When it happened How you know it What happened And how you feel about this event.... 详情>>
2019-07-12
有趣的演讲 Describe an interesting speech who gave the talk what the talk was about where you heard it and explain why the talk was interesting/ what you learned from this talk.... 详情>>
2019-07-12
名人影响 Describe a famous person in your country. who this person is what this person did that helped your country what kind of person he or she is and explain why (or how) this person became famous... 详情>>
2019-07-12
