【单选题】Which of the following sayings best describes people's likes and dislikes regarding their jobs?
A.
A rolling stone gathers no moss.
B.
One man's meat is another man's poison.
C.
Each bird likes to hear himself sing.
D.
The early birds catches the worm.
【单选题】铬酸钾指示剂法测定下列哪种离子必须采用返滴定法()
【单选题】Read the following paragraph carefully and write a topic sentence for each paragraph in the space provided. As an industry, TV provides jobs for hundreds of thousands who make TV sets and broadcasting...
A.
TV provides jobs for hundreds of thousands who make TV sets and broadcasting equipment.
B.
TV adds to people's store of knowledge.
C.
TV plays an important role in the life of Americans.
D.
TV helps hospitals a lot.
【单选题】维生素D缺乏性佝偻病激期的主要表现为( )