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托福閱讀背景知識(shí)——褪黑素

2025-01-23 10:06:46

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托福閱讀背景知識(shí)——褪黑素褪黑素作為一種改善睡眠的藥物,，已被廣泛認(rèn)可,，常被稱為“腦白金”。然而,，使用褪黑素是否會(huì)帶來副作用呢,？本文將深入探討托福閱讀背景知識(shí)中的…

1托福閱讀背景知識(shí)——褪黑素

托福閱讀背景知識(shí)——褪黑素

褪黑素作為一種改善睡眠的藥物，已被廣泛認(rèn)可,，常被稱為“腦白金”,。然而，使用褪黑素是否會(huì)帶來副作用呢,？本文將深入探討托福閱讀背景知識(shí)中的褪黑素,。

褪黑素對(duì)我們的睡眠質(zhì)量有著重要影響，以下是關(guān)于褪黑素如何促進(jìn)睡眠的最新托?？荚囬喿x資料,。

Melatonin, often referred to as “the hormone of darkness,” is crucial in regulating our sleep-wake cycles. This hormone is naturally produced by our bodies, and in many organisms, its levels are higher at night than during the day.

Melatonin在我們體內(nèi)的分泌與睡眠密切相關(guān)，許多人選擇補(bǔ)充褪黑素以幫助改善睡眠,、抵御時(shí)差反應(yīng)或平衡季節(jié)性情緒失調(diào),。

Effects on Memory

Recent research conducted by scientists at the University of Houston indicates that melatonin may negatively affect the formation of new memories.

Researchers aimed to understand how the body’s internal clock influences memory creation. They discovered that small striped minnows known as zebra fish performed well in learning tasks during the day but struggled significantly at night when melatonin levels were elevated.

The researchers hypothesized that melatonin might play a role in learning and memory processes.

Impact on Learning

To investigate further, they treated zebra fish with additional melatonin during daytime hours, effectively raising the hormone levels to those typically seen at night.

The results showed that while high levels of melatonin did not impair learning itself, they significantly hindered the fish's ability to form new memories or recall learned information.

Next, the scientists inhibited the action of melatonin in the fish by blocking its receptors using specific drugs. Although the melatonin levels remained unchanged, the effect of melatonin on the brain was effectively neutralized.

Blocking Melatonin Activity

With the activity of melatonin blocked, the zebra fish exhibited a marked improvement in their ability to form new memories, even during the night.

This research holds potential implications for humans. For instance, utilizing melatonin receptor blockers could enhance cognitive performance during nighttime tasks, benefiting individuals such as night-shift workers or students preparing for exams.

以上就是今天的托福閱讀材料，希望大家在練習(xí)托福閱讀的過程中,，能夠積累相關(guān)詞匯和句型,，從而更好地理解文章內(nèi)容，取得優(yōu)異的托福閱讀成績(jī),。祝愿大家在復(fù)習(xí)中順利,，收獲高分,！

2褪黑素的作用與托福閱讀

The Role of Melatonin and Its Relevance for TOEFL Reading

As a TOEFL test-taker, understanding various topics can enhance your reading skills. One intriguing subject is melatonin, a hormone that regulates sleep patterns. ?? In this article, we will explore its functions and how it can be relevant for your TOEFL preparation.

Melatonin is primarily produced by the pineal gland in the brain. Its main role is to signal the body when it's time to sleep. This process is influenced by light exposure; when it gets dark, melatonin levels rise, promoting sleepiness. Conversely, exposure to light inhibits its production. ??? This natural mechanism is essential for maintaining a healthy sleep cycle.

For TOEFL candidates, quality sleep is crucial. Research shows that adequate sleep improves cognitive functions such as memory, attention, and problem-solving skills. Therefore, understanding melatonin can help you manage your study schedule effectively. If you struggle with sleep, consider adjusting your environment by reducing light exposure before bedtime. This practice can lead to better rest and improved focus during your study sessions. ??

Now, let’s look at how melatonin might appear in a TOEFL reading passage. Here’s a sample text:

Sample Reading Passage:

Melatonin is often referred to as the "sleep hormone." It plays a significant role in regulating the body's internal clock and sleep-wake cycles. Studies indicate that melatonin levels rise in the evening, promoting sleep, and decrease in the morning, helping individuals wake up. Additionally, melatonin supplements are commonly used to alleviate sleep disorders and jet lag.

After reading such a passage, you might encounter questions like:

Sample Question:

What is the primary function of melatonin as described in the passage?

To answer this, you would need to identify key points about melatonin's role in sleep regulation. Here’s a reference answer:

Reference Answer:

The primary function of melatonin is to regulate the body's internal clock and promote sleep during the evening hours.

Preparing for the TOEFL involves not just studying vocabulary and grammar but also engaging with diverse topics. This approach enhances your comprehension skills. You might encounter new subjects in reading passages, which is why familiarizing yourself with various themes, including health-related topics like melatonin, is beneficial.

Here are some tips for integrating this knowledge into your TOEFL preparation:

Read Widely: Explore articles and studies about melatonin and other scientific topics. This will improve your reading speed and comprehension.

Practice Summarizing: After reading a passage, summarize it in your own words. This technique helps reinforce your understanding.

Take Practice Tests: Use TOEFL practice materials that include passages on various subjects to get accustomed to different writing styles and terminologies.

Incorporating knowledge about melatonin into your study routine can aid in better sleep, ultimately enhancing your performance on the TOEFL exam. Remember, a well-rested mind is more effective in tackling challenging reading passages! ??

3托福閱讀背景知識(shí)準(zhǔn)備技巧

在準(zhǔn)備托福考試的過程中,，閱讀部分往往是考生們最為關(guān)注的部分之一,。托福閱讀不僅考察考生的語言能力，還需要一定的背景知識(shí)來幫助理解文章的深層含義,。本文將分享一些有效的背景知識(shí)準(zhǔn)備技巧,，幫助考生更好地應(yīng)對(duì)托福閱讀。

1. 理解不同學(xué)科的基本概念 ??

托福閱讀涉及多個(gè)學(xué)科,，包括生物,、歷史、地理,、藝術(shù)等,。因此，考生需要對(duì)這些學(xué)科的基本概念有一定的了解,。例如,，在閱讀關(guān)于生態(tài)系統(tǒng)的文章時(shí)，了解“ecosystem”,、“biodiversity”等基本術(shù)語會(huì)幫助你更快地理解文章內(nèi)容,。

2. 增強(qiáng)詞匯量 ??

豐富的詞匯量可以顯著提高閱讀理解能力?？忌梢酝ㄟ^以下方式增強(qiáng)詞匯量：