天然草药优点多，用药也需遵医嘱
天然草药优点多，用药也需遵医嘱

Natural herbal medicines have been a part of the medicine world for a long time, and different cultures have used them in various ways. Some people use them for therapeutic purposes while others use them for medicinal purposes. The use of herbs is widely known to be safe because the ingredients 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.
Herbal medicines come in the form of tablets, capsules, teas, syrup(糖浆), oils and also powders, and each of them has different ways in which it’s used to help the body. The ingredients are taken from plant roots, stems or even leaves and then used naturally while they’re active.
The main purpose of natural herbal medicines is to help the body return to its normal state so that it can be restored wholly. Different herbs when taken will work differently in the body systems and therefore bring the desirable healing effects. For instance, they can restore the body's natural balance and health in cases where the body is sick or has low immunity(免疫力). They work by making the immune system 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. as they help your nerves calm down. 
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. It’s important to seek medical advice before taking any herbal drugs while taking the conventional drugs to avoid any adverse effects on the body. Moreover, it’s also good to consult your doctor to get the correct dosage and also the exact type of drug for the particular disease you have. 

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1.What can be inferred about herbal medicines from the first paragraph?

A They are available in the globe.

B They are completely safe to take.

C They are popular around the world.

D They can treat almost all diseases.

解析：选C。推断判断题。根据第一段Natural herbal medicines have been a part of the medicine world for a long time, and different cultures have used them in various ways.和Nowadays, different doctors are advocating for the use of herbal medicine可推断天然草药受到全世界人们的喜欢，故选C项。

2.What is the purpose of the third paragraph?

A To introduce how herbs are used.

B To list advantages of natural herbs.

C To show how herbs improve memory.

D To summarize what diseases herbs treat.

解析：选B。B 段落大意题。本段提到了中药的多个好处，由此可推断此段旨在列举中药的好处，故选B项。

3.What writing method is used most often in the passage?

A Giving examples.

B Making comparisons.

C Providing data.

D Giving definitions.

解析：选A。A 推理判断题。根据第三段提到For instance, they can restore the body’s natural balance and health in cases where the body is sick or has low immunity.和最后一段提到For instance, don’t use them in cases where the conventional drugs are supposed to be used.可推断举例说明是全文用得最多的写作方法，故选A项。

4.What should you do before using herbal medicines?

A To use them in any case you like.

B To ask doctors for advice before taking them.

C To decide your own dosage by yourself.

D To get the same type of drug for any disease.

解析：选B。B 推理判断题。根据最后一段第三句，用药前一定要寻求医生的建议，可知B项正确；A、C、D三项均不可取。故选B。