I ____my room ____weekend.
生物体结构和功能的基本单位是( )
找出不同类的单词
①A. tall B. shark C. short ____
②A. fish B. whale C. jump ____
③A. running B. diving C. bigger ____
④A. older B. young C. strong ____
⑤A. lobster B. cm C. kg ____
下列说法正确的是( )