2. 一份測量工具信度很高時，不一定代表具有高效度。(A)O(B)X

2. In general, a newly synthesized messenger RNA, called primaryRNA or pre-mRNA, contains introns and exons. What is the process inwhich the introns are removed and the exons are joined to form amatured mRNA?(A) signal transduction (B) translocation (C) transcription(D) translation (E) splicing