美发师为保持良好的精神状态，要（），上班时不能面带倦容。
A.多喝咖啡
B.注意服饰
C.注意卫生
D.注意休息
参考答案：D
句型转换。
1. Mary loves her belt very much.(对划线部分提问)
____ ____ Mary ____her belt?
2. Lucy is my classmate. She is thirteen years old.(合并成一句)
My classmate Lucy is a ____ girl.
3.They agreed with me at last.(改为一般疑问句)
____ they ____ with you at last?
4. I don't like the book because it's boring. (对划线部分提问)
____ ____ you ____ the book?
5. The young woman likes rings, scarves and sunglasses.(改为否定句)
The young woman ____ ____ rings, scarves ____ sunglasses.
由压差式溢流阀和节流阀并联组成的称为（）。
A、先导型溢流阀
B、溢流节流阀
C、调速阀
D、直动型溢流阀
