書(shū)面表達(dá)(共1小題，滿(mǎn)分1 5分)

請(qǐng)根據(jù)下面提示，以Modern Inventions為題，寫(xiě)一篇90詞左右的短文。(標(biāo)題、開(kāi)頭和結(jié)尾已給出，不計(jì)入總詞數(shù))

Introduction

許多現(xiàn)代發(fā)明給我們的現(xiàn)代生活帶來(lái)了巨大的變化。

Main body

冰箱

以前人們使用鹽來(lái)幫助他們保存肉和魚(yú)�，F(xiàn)在人們用冰箱可以長(zhǎng)時(shí)間保存食物……

洗衣機(jī)

過(guò)去，人們用手洗衣服……現(xiàn)在人們用洗衣機(jī)洗衣服，人們有了更多的時(shí)間來(lái)放松……

飛機(jī)

很久以前，人們主要乘船去旅行。現(xiàn)在……

……

……(請(qǐng)例舉一項(xiàng)現(xiàn)代發(fā)明，并談一談其給我們的生活帶來(lái)的變化。)

Conclusion

總之，在現(xiàn)代發(fā)明的幫助下，我們的生活得到了極大的改善。

要求：1．文章條理清楚，語(yǔ)句連貫，必須包含以上要點(diǎn)，可適當(dāng)發(fā)揮，但不要逐字翻譯。

2．詞數(shù)90左右(給出部分不計(jì)入總詞數(shù)) 3．不得出現(xiàn)真實(shí)的校名和人名。

Modern Inventions

Many modern inventions have made great difference in our life．they have changed the way we live．

In a word, our life has improved greatly with the help of modern inventions

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All the time you spent memorizing multiplication tables（乘法表）may have made you a better mathematician, according to a new study. A team of scientists from Stanford University, in California, have shown how the brain reorganizes itself as kids learn math.

After a certain amount of time spent practicing math, kids can put away the calculator（計(jì)算器）. They don’t even need to count on their fingers. They simply know the answers to subtraction(?), addition (+), and multiplication (×) facts. The quicker kids can recall basic math facts, the easier it is for them to solve more difficult math problems.

The Stanford University researchers observed（觀(guān)察）the brain activity of 28 students, ages 7 to 9, for the study. They took scans of the students’ brains as the students solved math calculations without the help of a calculator, pen or paper. A calculation—three plus four equals seven, for example—flashed on a screen. The students pushed a button to say if the answer was right or wrong. The scientists also recorded the response speed, and what parts of the brain became active as the kids pushed the button.

These observations showed a process called fact retrieval. Rather than using their fingers to count, or scrawling out equations（列算式）on a piece of paper, the students pulled the answers from memory. It’s as if the answers to basic subtraction, addition, and multiplication problems are kept in a long-term storage part in the brain. The storage part was built from repetition. “Experience really does matter,” said Dr. Kathy Mann Koepeke of the National Institutes of Health.

Children make the changefrom counting to fact retrieval when they are 8 to 9 years old, the study says. This is the time when most students are learning basic addition and subtraction. When kids have basic math facts memorized, the brain has more free space to learn more difficult math.

This process has benefits for the future. The study showed, as kids got older, their answers relied more on memory and became quicker and more correct. Less brain activity was involved in counting. Some children make this change quicker than others.

Scientists hope to use this research to develop new strategies（策略）to help kids learn math at all levels. One strategy the study suggests is for students to test themselves in different orders—solving five times three before five times two, for example. Mixing up the order keeps the brain active. Keep these trainings up, and you may be a math whiz in no time.

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