考生普遍認(rèn)為這個(gè)話題卡是09年5月出現(xiàn)的新題當(dāng)中，最難的一個(gè)。我個(gè)人認(rèn)為它確實(shí)有些難度，但并不是可怕到無話可說的地步?？茖W(xué)分為很多種，生物，植物，物理，化學(xué)…… 大家從其中某一門學(xué)科中挑選一個(gè)比較生活化，比較通俗易懂的用英文描述出來就可以了，并不需要說那些深?yuàn)W的科學(xué)問題如：外太空黑洞，磁鐵的兩極，無機(jī)化學(xué)命名等等。

下面挑選一個(gè)科學(xué)實(shí)驗(yàn)的例子，提供一些素材給大家，其實(shí)還有很多可以選擇，時(shí)間關(guān)系，先去上課，晚上回來再給大家補(bǔ)充關(guān)于生物和植物方面的口語素材。

Describe a science lesson that you had in school or university.

You should say:

* when you attended this lesson

* where you attended this lesson

* how you learned it

and explain what you learned.

Boiling Frog 溫水煮青蛙

how you learned it

* The boiling frog story states that a frog can be boiled alive if the water is heated slowly enough — it is said that if a frog is placed in boiling water, it will jump out, but if it is placed in cold water that is slowly heated, it will never jump out.

* If you put the frog in cold water and slowly increase the temperature--slowly boil the water, the frog will be cooked without trying to jump out.

* They say that if you put a frog into a pot of boiling water, it will leap out right away to escape the danger. But, if you put a frog in a kettle that is filled with water that is cool and pleasant, and then you gradually heat the kettle until it starts boiling, the frog will not become aware of the threat until it is too late. The frog's survival instincts are geared towards detecting sudden changes.

explain what you learned

* The story is often used as a metaphor for the inability of people to react to important changes that occur gradually.

* Life happens gradually. Like the frog, we can be fooled, and suddenly it’s too late. We need to be aware of what is happening.

* This is a story that is used to illustrate how people might get themselves into terrible trouble. This parable is often used to illustrate how humans have to be careful to watch slowly changing trends in the environment, not just the sudden changes. Its a warning to keep us paying attention not just to obvious threats but to more slowly developing ones.

* An example: Let's say that every year, the local well had an inch less of water in it. A person might realize there's a problem if there's suddenly NO water, but a slowly dropping level might not be an obvious crisis until it's too late!

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