C. DraftingFirst draft(初稿):Use the information in your outline above to write thefirst draft.【Remember to use the expressions learned to state problems and propose solutions.】
E. Final draft(终稿):Choosean environmental issueand propose how people can help improve the situation.Givethree solutions.Instructions:1. use the simple present;2. have a clear topic sentence;3. have three solutions to the given problem;4. include one detail for each supporting idea;4. write 55-100 words.Your paragraph will bescoredbased on:content (topic sentence and supporting ideas);grammar (problem/solution expressions);completed sentence (SVO);vocabulary (words in Unit 4);spelling, punctuation, and capitalization.
在进行受力分析用到作用力与反作用力定律时,应注意,作用力和反作用力总是同时存在的,并()。
A. 作用于同一个物体上而使物体达到平衡
B. 分别作用在两个物体上
C. 作用在同一个物体上
D. 不一定作用在同一个物体上
在力的作用下,大小和形状都保持不变的物体,称之为_________。