Despite the extreme importance of a person's skin, the reality is that many people simply do not pay much attention to issues relating to the health of their skin. With that in mind, there are some prime tips and pointers that you must always keep in mind when it comes to the health and protection of your skin.
Protection against harmful rays from the sun is one of the most important steps that you need to take. With this in mind it is vitally important that you make certain you use solid protection when you go out into the sun.
Your diet also has a direct effect on the health of your skin. The most important aspect of your diet in relation to the health of your skin is to make certain that you eat a proper amount of food items that contain the proteins and nutrients necessary for your skin’s health.
Water is also important to the health of your skin. While you certainly have heard it before, it actually is true that you should drink at least eight 8-ounce glasses of fresh and pure water every day to keep healthy skin.
Finally, when it comes to the health of your skin today and into the future you should avoid smoking all together. In addition, you should drink alcohol only in moderation. Both smoking and too much alcohol consumption can negatively affect the health of your skin in significant ways.
64. The underlined word “elements” in the first paragraph probably refers to ______.
A. bad weather B. a favorable environment
C. all the chemicals D. the cells making up the skin
65. The writer lists some of the functions of skin in the beginning part to ______.
A. make an analysis of the main topic of the passage
B. draw readers’ attention to the main topic of the passage
C. give a brief introduction to the main topic of the passage
D. give the readers a summary of the main topic of the passage
66. Which of the following does not help maintain the health of skin?
A. Drinking heavy alcohol.
B. Taking proper diet in one’s life.
C. Using solid protection when exposed to the sun.
D. Drinking enough fresh and pure water every day.
67. Which of the following might be the most proper title of the above passage?
A. An essential organ of our body. B. Tips for soft and smooth skin.
C. Habits and skin health. D. How to keep our skin healthy.
D
Japanese doctors have used thin sheets of tissue from people’s cheeks to repair damaged corneas (角膜). A team from Osaka University transplanted thin layers of cheek cells onto the eyes of four patients with a rare and painful eye condition, reports BBC online. Patients whose vision had been cloudy could see well afterwards, and the “new corneas” remained clear more than a year after the operation.
Doctors can also take cells from a healthy eye and grow them in a dish to produce a new cornea, or they can transplant corneas from donors. But these techniques may not work when both eyes are too badly damaged by accident or disease.
The team hopes their work may help solve the problem and lead to other types of grow-your-own tissue transplants. The cornea is the clear layer of cells on the surface of the eye. It can be damaged by trauma (外伤) or by a range of diseases.
The team worked with four patients who had a painful condition that caused cloudy corneas and dry eyes. Often the eye can regenerate cornea cells but none of the four patients had this ability. The researchers took a 3 mm-wide square of tissue from inside the mouth (cheeks) and grew it into a thin layer in the lab. They used a special low-temperature technique to separate a very thin sheet off each batch (组). They then laid that onto the patient’s eye. The cell layers stuck onto the eye and developed into tissue that looked and acted like a healthy cornea.
However, long-term follow-up and experience with a large series of patients are needed to assess the benefits and risks of this method. “Yet, it does offer the potential of treating severe eye diseases that are resistant to standard approaches,” said the head of the research, Kohji Nishida.
68. Now doctors can repair the damaged corneas with the following methods EXCEPT ______.
A. using mouth tissue
B. taking cells from a healthy eye and growing them in a dish
C. transplanting corneas from another person
D. using finger tissue
69. If both eyes are too badly damaged, we can treat them ______.
A. only by using mouth tissue
B. by taking cells from a healthy eye and growing them in a dish
C. by transplanting healthy corneas from donors
D. by none of the mentioned methods
70. We can infer from the passage that ______.
A. the new technique can be widely used in the operations
B. the new technique needs to be further tested
C. the new technique has more benefits than risks
D. any new technique has risks
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