Which of the following can be the best title of the passage?
A.No Text Message. No Tragedy.
B.Text Message, a New Killer.
C.Have You Text Messaged?
D.Do You Like Text Messaging?
What is the attitude of the author to text messaging?
A.He seems to be against" it.
B.He shows no idea on text messaging.
C.He supports text messaging.
D.He is not against it.
属于支链氨基酸的是()
A.脯氨酸
B.精氨酸
C.亮氨酸
D.天冬氨酸
E.丙氨酸
企业营运能力分析的意义与目的。
改进发明是什么?
【C19】
A.founded
B.found
C.made
D.put