将25克盐溶于100克水中,盐与水的比是多少?盐与盐水的比是多少?
25:100;25:125
短文阅读。
Today is Sunday. It's Jack's birthday. Jack is thirteen years old. Jack's friends will come to his house
and they will have a party tonight. Jack will have a cake and candles and birthday presents. Jack is very
happy.
1. Is today Saturday?
____________________.
2. How old is Jack?
3. What will Jack's friends have tonight?
______________________________.
4. What will Jack have?
5. Is Jack happy?
未使用的无菌包受潮后,正确的处理是
A.晾干后使用B.烘干后使用C.4小时内使用D.2小时内使用E.重新灭菌