The scientific study of matter's characteristics and behaviour is known as chemistry.andare different from the normal vocabulary. It is a branch of natural science that examines the building blocks of matter, including the atoms, molecules, and ions that make up compounds and their composition, s...
Donotthrowchemicals,oils,paintsormedicinesdownthetoilet.Inmanycities,yourlocal environmentofficecanhelpwiththedisposal(清除)ofmedicinesandchemicals.Andyoushould buymoreenvironmentally-safecleaningliquidsforuseathomeandotherpublicplaces.Theyare lessdangeroustotheenvironment. 3 Ifyouliveclosetoawaterbody,trytoplanttree...
Others want to be scientists so that they can make great contributions to society. I am no exception. When I was a child, I dreamed of becoming a kung fu star like Jackie Chan in the future. In order to make my dream a reality, ...
friends. 16 Italsocanmakeiteasiertointeractthenexttime. Findasafeplacetomakeconnections.Ifgoingtotheschooldancemakesyoufeellikeyou justdon?tbelong,tryjoining aspecial-interest group.Maybeit?sthedramacluborthemarching band. 17 Find other ways of making connections. Lonelypeoplehungerforacceptanceandfriendsh...
根据第三段1,2行And the best way to strengthen willpower is to make it into a habit. “Sometimes it looks like people with great self-control aren’t working hard—but that’s because they’ve made it automatic可知加强意志力最好的方法就是让意志力成为一种习惯。有时候有很强自我控制里的人...
Make sure your feet can reach the chair's footrest or ground when you sit.When should I seek immediate care?You have an injury that has broken your skin and caused your varicose veins to bleed. Your leg is swollen and hard. Your legs or feet are turning blue or black. Your leg ...
Make an escape plan in case a fire breaks out in your home. Practice it often with your family. Crawl on the floor to escape a burning building. The air will be cooler and cleaner. Use smoke detectors in your home. Put 1 detector on each level of your home and outside each bedroom...
The hidden hazard is what some chemicals produce when in a fire. These byproducts from combustion can be quite deadly. Pick a synthetic material (like nylon or PVC or one of the hundreds of other ones) and discuss what the possible toxic chemicals it wou ...
Material: While many materials can be used to make flannel, not all materials are suitable for this fabric. Silk, for instance, is too fine to be made into flannel, which is supposed to be both soft and insulative. Flannel Cotton Red Blue Plaid Fabric Flannel in history It’s believed...
Chemicals such as pesticides, pool chemicals, or household cleaners Certain medicines, such as antibiotics, cancer medicines, and some heart medicines Smoke from a fire, or dust from grains, such as on a farm Food or liquid that you inhale Exposure to bird feathers or droppingsWhat are the si...