汽车发动机在启动前发现冷却液减少的很快时，应考虑（）。
A、加注冷却液
B、水箱、水箱软管、水泵等有可能泄漏
C、是自然现象
D、水泵不工作
参考答案：B
同义句转换，每空一词。
1. To eat a balanced diet is very important.
________ very important ________ eat a balanced diet.
2. They are watching TV at home now.
They are watching TV at home ________.
3. What's wrong with your sister?
What's ________ with your sister?
4. She has a sore throat.
There is something ________ her throat.
5. There is a lot of milk in the bottle.
There is ________ milk in the bottle.
尿负荷试验常用于测定那种营养素的营养状况（）
A.脂溶性维生素
B.水溶性维生素
C.矿物质
D.蛋白质
E.脂类
