We know you care about your family and want the best for them. You want them to always feel safe and protected. Therefore, you’re expected to get trained for first-aid skills to care for them. 【小题1】

When you take a first -aid course, you will understand how important it is to be prepared for the unexpected. 【小题2】 In fact, having more than one kit (工具箱) and placing them in your home, your car and somewhere else may be an action that will benefit someone greatly in the future.

【小题3】 For example, if your child has a cut, you will know which cream to use to prevent further infections (感染). If you know the signs of a heart attack, you may save a life by giving immediate aid.

Knowledge of first aid will not just help the members of your family. 【小题4】 Having that first-aid kit on hand will be convenient, and having the knowledge to deal with the situation at hand will be even more helpful in dealing with the injury or illness.

By getting trained in first aid, you will show family members how important it is to be able to care for others during emergencies. 【小题5】 In this way, everyone will be prepared to deal with the unexpected.

Wearing masks is widely believed to be a simple but useful method to protect oneself from a variety of harmful things. In fact, masks have been helping mankind for centuries.

In the first century, many people in Roman Empire worked underground in mines. But most of them suffered from and even eventually died of breathing illnesses. To work out this problem, Pliny the Elder, a Roman philosopher (哲学家) and naturalist, recommended the use of animal bladder (膀胱) skins to stop dust from being breathed in. Thus, Pliny the Elder was considered the inventor of the first recorded mask.

Early inventions did not stop with Pliny. Around the 16th century, Italian artist and inventor Leonardo da Vinci suggested using a cloth wetted in water over the face to protect against the poisonous chemicals (化学物质).

The design of the mask took a big step forward in the 19th century. In 1848, American Lewis Hassley became the first person to get the official right to produce a protective mask for miners, which was a milestone in face mask history. Masks at this stage were similar to gas masks. Later, in 1897, Polish-Austrian doctor Johann von Mikuliez-Radecki designed a simple mask made up of one piece of medical gauze (纱布), recommending medical workers to wear it to prevent getting diseases. That was the first recorded use of a medical mask.

In 1910, a terrible disease broke out in Northeast China. Chinese doctor Wu Liande designed a cheap face mask called “Wu’s mask”, which was made of two pieces of medical gauze. This mask was praised by experts around the world, as it was simple and cheap to make.

With the happening of widely spreading diseases and the rise of air pollution, the materials in masks have continued to develop to better protect the wearers in modern times. For example, mask models such as N95 and KN90, which can help prevent smog from being breathed in, have become highly popular.

Natural herbal medicines have been a part of the medicine world for a long time. 【小题1】 Some people use them for therapeutic (治疗的) purposes while others use them for medicinal purposes.

【小题2】 That is because the ingredients (成分) are natural and therefore have very few side effects when they’re taken. Nowadays, different doctors are advocating for the use of herbal medicine for the well—being and the health of the body.

The main purpose of natural Herbal medicines is to help the body return to its normal state so that it can be restored wholly. 【小题3】 For instance, they can restore the body’s natural balance and health in cases where the body is sick or has low immunity. They work by making the immune system (免疫系统) function well and also promote the well - being of the body before any illness sets in. They can make one better at remembering something as they improve blood circulation to the brain. Additionally, natural herbal medicines can reduce anxiety, depression, exhaustion, stress, etc. 【小题4】

Despite many advantages of natural herbal medicines, you should take something into account when you use them. For instance, don’t use them in cases where the conventional drugs are supposed to be used. 【小题5】 That is because getting the correct dosage (剂量) and also the exact type of drug for the particular disease is of vital importance.