1 . Do plants listen to music? How can a plant possibly respond to music? Well, plants breathe through their many mouths, which are also known as stomata and it has been discovered that plant stomata respond to music!
A few years ago, scientists at the University of California, San Diego discovered what controls a plant’s stomata.The two cells that form the stoma consist of specialized cells adjusted to the resonant(共鸣的)frequency of calcium(钙). When exposed to this frequency the stomata close. However, if the frequency isn’t exactly right the cells will open again within an hour.This happens even if the concentration of calcium is high enough that the stomata would normally close.
When specific music or bird songs cause the plant to vibrate(颤动), but not at the exact frequency for calcium resonance, the stomata will open after a misjudgment of time, even though the plant would keep them closed under normal circumstances.
Testing has shown that a leaf fertilizer(肥料)applied to the plant will have more effect on the development and growth of the plant if its stomata are wide open. This is quite logical, because plants absorb the leaf fertilizer through their stomata.Combinations of frequency and leaf fertilizer are available for many different crops. However, if the stomata are forced to remain open, the plant won’t be able to control the amount of water lost and so it risks dehydration(脱水). As a result, exposing plants to music for over 3 hours a day could endanger their health.There could also be bad effects on plants if the volume or frequency is too high.
It isn’t exactly clear how music influences the development and growth of plants, but more and more is being discovered about resonance physics and we’re closer than ever to solid scientific proof and theories in this area. Maybe, in twenty years’ time people will laugh if you say plants don’t have ears!
1. Why does the author ask the questions in Paragraph 1?| A．To express his doubts. |
| B．To present different ideas. |
| C．To describe the lifestyle of plants. |
| D．To introduce points for discussion. |
| A．The reopening of the cells. |
| B．The change in frequency. |
| C．The frequency of calcium. |
| D．The closing of the stomata. |
| A．future plants are likely to have ears |
| B．how music affects plant growth is widely known |
| C．growers must be careful when exposing plants to music |
| D．the stomata don’t affect the effect of leaf fertilizer on plants |
| A．Benefits of Music to Plants |
| B．Influence of Music on Plants |
| C．How to Improve Plant Growth? |
| D．How Do Plants Listen Without Ears? |
I’m
Just keep
You must
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After
1.分析手机支付的利与弊；
2.提出你的观点或建议。
注意：
1.词数100左右。
2.可以适当增加情节，以使行文连贯。（参考词汇：扫二维码 scan QR codes）
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After orbiting Earth for six months, the three members of China’s Shenzhou XIII mission returned to Earth safely on April 16h, 2022,
During their stay in the space station, the crew preformed two spacewalks and conducted a series of scientific experiments using a large robotic arm and other
The Shenzhou XIII’s space-based lessons,
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（╲）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词；
注意：每处错误及其修改均仅限一词。每题仅有一处错误。
1. Mark is a genius. By the time he graduated, he had offered jobs by a couple of computer companies.
2. Emojis, dated back to the 1990’s, are small symbols representing ideas, emotions or feelings.
3. Phone boxes are hard to find, and the main reason for this is simply because we don’t need them any more.
4. To make advertisements attractive, huge amounts of money is spent in applying modern design techniques.
5. Henry was happy to withdraw from social life, seeking a harmony relationship with nature in his quiet life.
6. They are putting innocent lives in risk by starting boundary conflicts.
7. I find this impossible to cooperate with him for mutual benefits.
8. There is an urgent need for people in developing countries to have an access to drinking water.
9. The tourist industry is vital importance to the national economy.
10. The author provided some supporting arguments to make the point convinced.
| A．cast light on | B．compensate for | C．merge into | D．strike a chord with |
