Popular science knowledge handwritten newspaper

Popular science knowledge handwritten newspaper

Little knowledge of popular science in life

Can garlic prevent influenza?

A: Yes.

Do you often eat foreign fast food?

A: Not good. Foreign fast food has three highs (high calorie, high sodium and high fat) and three lows (low minerals, low vitamins and low fiber).

3. Are you sleepy?

A: Not good. Lack of sleep is not good for your health, but sleepiness is not good either. Sleepiness may be a sign of arteriosclerosis.

Viruses and bacteria are contagious, so will bad mood be contagious?

A: Yes. As long as you face a person in a bad mood for 20 minutes, you will be passed on.

5. Can eating bananas make people feel better?

A: Yes. Bananas contain a substance that can help the brain produce serotonin, which can make people feel happy and peaceful, and even relieve pain.

6. Can lowering body temperature make people live longer?

A: Yes. The average life expectancy of people living in the cold zone is longer than that of people living in the tropics 10 to 30 years old. When the body temperature drops to 30 degrees Celsius, people's metabolic rate can be reduced by half, and the body's oxygen consumption is only 50% of normal.

7. How about listening to the radio while running?

A: Not good. In this way, the nerve in charge of thinking cannot rest, and such exercise can only get twice the result with half the effort.

8. Can I mix old and new batteries?

A: No, the resistance in the old battery actually becomes the resistance in the circuit, which will waste electricity.

9. What is the principle of the Nobel Prize?

A: Aim at the highest contribution.

What is intellectual property?

A: People can enjoy the patent right of their intellectual creation according to law.

1 1. Do you use energy-saving lamps to save electricity and money?

A: Save money. Take a 34 yuan 10W energy-saving lamp as an example (its illumination brightness is equivalent to 50W of ordinary incandescent lamp). Based on one day 12 hours, 1 10 days can recover the cost.

Are bats blind?

A: Yes. It sends out ultrasonic waves from the throat, receives echoes with ears, and judges the size, shape, texture and distance of the reflector.

13. Is it better to eat more probiotics?

A: No. Some vitamins can be poisoned if taken in too much.

14, the rings are on the tree, what else?

A: Animals and people have rings, such as those on tortoise shells and those on the teeth of cattle, horses and sheep.

15. Can chewing gum replace brushing your teeth?

A: No, chewing gum can only be an auxiliary cleaning for teeth, because chewing gum can clean the surface of teeth and part of gums, but it can't effectively remove food residue between teeth, so brush your teeth when you brush your teeth.

17. What are the three main ways of AIDS transmission?

A: Sexual contact, blood and mother and baby.

18. Will contact with AIDS patients and HIV-infected people in daily life and work lead to AIDS?

A: No.

19. What function did HIV destroy after it invaded the human body?

A: Immune function.