--- Did you understand what the chairman said at the meeting?

--- No, his meaning didn’t ________. Would you explain it to me?

A．get along

B．get across

C．get back

D．get around

生长发育的渐进性表现为其生长发育的程序呈现（）

A.由头到尾的规律

B.由近到远的规律

C.由粗到细的规律

D.由动到静的规律

E.由前到后的规律