①根据图1表示数的方法，把图2答案写在括号里．

②在格子图3里画点表示50．

过上农耕生活的原始居民已经会建造房屋。右图所示，居住在该样式房屋中的原始居民分别是（    ）

综合性学习。

学习了《星星变奏曲》后，班级举行“话说星星”综合性学习活动，请你参与并完成以下任务。

用方框中所给词的适当形式填空，使短文正确、通顺。每词限用一次。

    One day, Mrs. Brown ____  to see the doctor. She said she ____ tired every time after she did the____ . The doctor ____ over Mrs. Brown for a few ____ , then the doctor said, “I’m afraid you are too fat.”“Too fat?”asked Mrs. Brown. The doctor said Mrs. Brown ____  too much food and she didn't____ much  exercise. Mrs. Brown____ the doctor what to do. The doctor said, “If you want to be ____ and keep ____  , you have to eat less food.”