They are so small that you need a microscope to see them, but so powerful that experts predict they could kill ten million people per year worldwide by the year 2050. They are superbugs — drug-resistant bacteria that have emerged since antibiotics (抗生素) revolutionized medicine. Indeed, the rise of these superbugs and the use of antibiotics are closely connected.
All organisms change over time. Smaller organisms, such as bacteria, are able to evolve more quickly, adapting as circumstances require. Facing antibiotics, bacteria have adapted with deadly efficiency. When a patient takes antibiotics to fight off a bacterial infection, the goal is to kill the bacteria causing the infection. However, although most of the bacteria are killed, a few of the strongest bacteria survive. Thus, only these drug-resistant bacteria are able to reproduce. This sets up a cycle and eventually results in the development of superbugs-bacteria able to resist even the most powerful drugs.
Scientists believe that a large part of this cycle is preventable. One recent study suggested that almost 50% of all antibiotic use is inappropriate or unnecessary. Some patients are prescribed (开处方) antibiotics for illness that would eventually clear up on their own. In addition, some patients don’t finish their course of medication, allowing bacteria to bounce back, but stronger. All of these factors contribute to the rise and spread of superbugs.
Another major factor that promotes the spread of drug resistance is the use of antibiotics for livestock (家畜). In the United States, 80% of antibiotic use is for animals. Partially, the drugs are used to prevent the spread of infection among animals. However, farmers also use antibiotics to help animals to gain weight quickly. Unfortunately, such use is problematic because it kills off the beneficial bacteria, leaving drug-resistant strains of bacteria to thrive.
What can be done to preserve antibiotics for future generations? Scientists maintain that as individuals, we can make a difference with simple steps, such as regular hand washing. It is also important that patients understand that antibiotics aren’t always the right course of treatment. Finally, it is crucial to take antibiotics out of the food chain. Fortunately, consumers are pushing for this, so we are likely to see changes in the near future.
【小题1】According to the passage, what are superbugs?A.Effective and revolutionary antibiotics. | B.Small but powerful drug-resistant bacteria. |
C.Tiny organisms found under a microscope. | D.Bacteria that could harm animals and humans. |
A.The antibiotics for illness. | B.Some infected animals. |
C.Patients’ awareness of treatment course. | D.The misuse of antibiotics. |
A.Indifferent. | B.Neutral. | C.Pessimistic. | D.Optimistic. |
A.Superbugs — Preventable or not? | B.Antibiotics — Beneficial or not? |
C.Superbugs — Deadly Drug-resistant Bacteria | D.Antibiotics — Major Threats to Human Beings |
What is empathy?
Empathy is the ability to share and understand the feelings or emotions of others.
Types of empathy
There are three different ways to think of empathy. First, there is affective empathy. This is the ability to share the emotions of others. For example, someone watching a scary movie may feel scared when a character is scared. Second, there is cognitive empathy. This is the ability to understand the feelings of others. A good example is a counselor. Counselors may understand that someone they are speaking to is sad, but that does not mean the counselor becomes sad. Finally, there is emotional regulation.
Depending on the situation
Measuring stick
Our brain has evolved to be able to quickly change under different circumstances.
A.Having empathy is very useful |
B.Empathy is often measured with surveys |
C.This refers to the ability to control one’s emotions |
D.Sometimes it could be helpful to feel less empathy |
E.People experience pleasure when their opponent fails |
F.Sometimes we may feel too much empathy for our own groups |
G.Empathy helps humans respond appropriately to different situations |
How Gratitude Makes You Happier
Choosing to be thankful may well be an easy and accessible way to boost your happiness. We usually think of happiness as a subjective sense of well-being, a feeling of joy and satisfaction. But more than just an emotion or fleeting (短暂的) feeling, happiness also includes a deep sense of meaning, worth and purpose in life.
Research has shown gratitude has far-reaching effects on our physical health. When people are thankful, they’re more likely to exercise, eat better, and take care of their health. Much evidence points to lower stress, reduced pain and improved immune systems as a result of being thankful.
Gratitude has a strong positive impact on psychological well-being as well. It increases self-esteem, enhances positive emotions and makes us more optimistic.
Scandinavians themselves are determining their levels of happiness. They are appreciative of a functioning society where they have economic security and social institutions support everyone. Yet, there is something else. They value “moderation”, a just enoughness.
A.Scandinavians may spend a lot of the winter in darkness. |
B.Gratitude supports happiness in ways related to all of these. |
C.They don’t chase happiness or work overtime for months at a time. |
D.Gratitude is the feeling of being grateful and wanting to express your thanks. |
E.Just like a muscle, thankfulness is something we need to exercise more often. |
F.When we feel deep happiness, our bodies are producing all sorts of wonderful chemicals. |
G.Even better blood pressure and positive effects on the heart have been linked to gratitude. |
With the improvement of privacy protection awareness, everyone has questions about the telephone address, ID card information and so on. This visible privacy has been particularly concerned, but for chat photos and original pictures, it has not attracted enough attention. The topic “How much privacy can a photo reveal” has been trending on Sina Weibo, sparking concern and heated discussion about privacy awareness. In group chats, some people may post their original photos. But that may give away your home address and other information.
Images often contain a lot of information and various traces left by digital cameras or photo manipulation (处理) software. This data, called Exchangeable Image File Format (EXIF), is a key tool for many professionals. It can detail whether the photographer used a flash, which digital effects were applied to a picture and when the photo was taken. EXIF can also contain the precise GPS coordinates (坐标) of the location where a photo was taken, according to CNN. If you take a landscape picture from your window and send the original picture to a group chat, it means that you are releasing your location data to all strangers in the group. They may even accurately infer your house number by analyzing the shooting time and angle.
Not just in a group chat, sending an image in a text message, email, or other delivery tools will also include the accompanying information. So how do we protect our privacy when sending photos? The most effective way is to avoid sending original photos in group chats. If it’s necessary, try not to tap the “original picture”. However, photos sent by WeChat Moments are automatically pressed by the system, and they travel without location and other information. To solve the problem at its root, we can delete and remove a picture’s EXIF data on a computer. If you are using an iOS smartphone, you can turn off location services for the camera in the privacy settings. If you’re using an Android, the settings vary. Typically, you can go to the setting menu and switch the services off for the camera, according to CTV News. There is one more thing you can do—photoshop your photos before you share it. What comes with your edited images is photos without stored location data.
【小题1】What is the function of the first paragraph?A.To explain the meaning of privacy protection. |
B.To lead to the topic of privacy protection. |
C.To describe people’s concern about privacy. |
D.To tell the readers the importance of privacy. |
A.It can be used as a flash for the photographer. |
B.It may apply digital effects to a picture. |
C.It includes the home address of the viewers. |
D.It provides a photo’s shooting time and place. |
A.By switching off location services for Wechat. |
B.By sending out their EXIF data on our phone. |
C.By editing the photos with photo editing apps. |
D.By turning off Internet connection when taking photos. |
A.Securing Social Media | B.The Importance of Protecting Photos |
C.The Privacy a Photo Reveals | D.Getting Information from Photos |
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