改写句子。1. that, see, can, cat, you?_____________________________________________________________________2. think, Mrs. Lien’s, I, it’s_____________________________________________________________________3. fireman, your, a, isn’t father?_____________________________________________________________________4. him, go, ask, and, let’s_____________________________________________________________________5. of, at, the, the, the, house, cat, is, top_____________________________________________________________________
阅读短文, 根据短文内容选择问题的正确答案. 答案填写大写字母This is Joy’s room. It’s a big room. There are some pictures on the wall(墙). There’s a desk and a chair in her room. The desk is near the window. Her bag and pencil case are on the desk. There are some pencils, a pen, and a ruler in the pencil case. Joy’s bed is near the desk. Her shoes and a ball are under the bed. Joy and her friend, Kate, are often in the room. They like the room very much.( ) 1. Joy’s room is ___.A. not smallB. not big C. very old( ) 2. There ___ in her room.A. is a desk and chairB. are some desks and chairs C. are some desks and a chair( ) 3. Joy’s pencil case is ___.A. on the deskB. near the windowC. under the bed( ) 4. Her bed is ___.A. near the desk B. near the windowC. under the desk( ) 5. ___ shoes are under the bed.A. Kate’sB. Joy’sC. Kate’s and Joy’s
改写句子。1. this, is, what, English, in, Miss Gao_____________________________________________________________________2. please, is, what, name, your_____________________________________________________________________3. you, spell, can, word, the, please_____________________________________________________________________4. old, you, are, how_____________________________________________________________________5. name, my, Li Lei, is_____________________________________________________________________
静力学中的两个基本要素是( )。
A. 力和力对点之矩
B. 主矢和主矩
C. 力和力偶
D. 力对点之矩和力偶