What materials can pencil cases be made of? A. Wood B. Paper C. Plastic D. Glass 相关知识点: 试题来源: 解析 C。解析:文章中提到“The pencil case can be made of different materials. Some are made of plastic, while others are made of metal.”,所以文具盒可以由塑料制成。
There are five basic materials. Most things are made of these materials.Metal is very heavy. And it is very hard and strong. It usually feels cool if you touch it. We use metal to make lots of things. We use it for forks and knives. We use it for keys. We use it for cars. ...
What other materials are used in glass? Other materials that are sometimes used to make glass include boron, magnesium oxide, and calcium oxide. These materials are added to change the properties of the glass, such as making it more durable or changing its color. For example, boron is used ...
Glass A magnifying glass or telescope. 3 Ceramic A ceramic is any of the various hard, brittle, heat-resistant and corrosion-resistant materials made by shaping and then firing a nonmetallic mineral, such as clay, at a high temperature. Common examples are earthenware, porcelain, and brick. 1...
aIn addition, reference materials and community issues are addressed as applicable. Step-by-Step Sequence of Operations Each operation’s work plan is broken down into a step-by-step sequence. For a relatively simple operation like roadway grading, it may only consist of a few steps, such as...
根据“Wood is lighter than metal and glass.”和“But it is much stronger than glass.”可知此处介绍木料与金属之间对比的优劣性。选项B“它不如金属那么坚固。”符合语境。故选B。 (4)题详解: 根据“We use cloth to make lot of things. For example, it is used to make clothing.”可知此处介绍...
C. A triangular glass tank filled with sand, a candle, and a colored screen. D. A square glass tank filled with gas, a bulb, and a grey screen. 相关知识点: 试题来源: 解析 B。解析:文章中提到光的折射实验使用的材料是一个装有水的长方形玻璃缸、一个激光笔和一个白色屏幕。A 选项中是...
Glass is a versatile material that is ideally suited for any number of medical and optical uses in addition to its wide application in the building and automotive trades, said Carlo Pantano, director of Penn State's Materials Research Institute and one of the conference's organizers. Glass prod...
or a glass lightbulb. Glass is one of the world's oldest and most versatile human-created materials. Let's find out some more about it.Photo: Glass riddle: How does something transparent to light appear colored? The colors in this glass aren't really there! Glass lenses refract (bend) ...
Corning was working to make glass stronger decades before Corning® Gorilla® Glass came along. Read More Glass: The Ultimate Tool in the Materials Science Toolbelt Materials scientists work every day to expand our understanding of what glass can do. ...