问题
选择题
下图为泡菜腌制过程中亚硝酸盐含量变化的曲线，正确的是[ ]
A．
B．
C．
答案
答案：C
搜题请搜索小程序“爱下问搜题”
下图为泡菜腌制过程中亚硝酸盐含量变化的曲线，正确的是[ ]
A．
B．
C．
答案：C
| 根据短文内容选择适当的单词，并用其正确形式填空，每个词限用一次。 | |
in Egypt, the 1. _ favorite game was throwing stones.But a badly thrown stone could 2. _ a child. Looking for something less 3. _ to throw, the people in Egypt 4. _ the first balls. At first, they used tree 5._____to make balls. They used vines ( 藤) to keep the leaves together. Later they began to use pieces of animal skin to make balls and 6. _ them with some light things. These balls were much 7. _ than the old one. Before long they invented a lot of ball games, and 8. _ had its own rules. They began to play these ball games according to the rules. They thought that ball playing was one of the best 9. _ to teach the young men to be brave and 10. _ . |