为什么要多吃蔬菜水果?
参考答案:
①含丰富的矿物质,如钙、铁、镁、铜等;
②含大量的维生系C和其它维生素;
③含丰富的纤维素;
④含有易被人体吸收的糖类及蛋白质、少量脂肪类等。
Form the sentences. 连词成句。
1. school, he, in, a, new, boy, is
2. not, Steven's, it's, pencil
3. mouth, the pencil, is, in, Danny's
4. he, reading, is, a, book
5. paper, she, is, on, the, drawing
列车行李员在值乘前应做好哪些工作?