138、10.It is responsible for error correction, flow control, hardware addressing, and how devices such as hubs, bridges, repeaters, and Layer2 switches .

156、be comfortable with

155、have faith in ones own judgment

154、made quite a ()

153、数词读法包括3种

152、had better () sth.

151、dream () doing sth

150、experiment with是实验

149、Find your true self and

148、colorful () rich life

147、Along with her great success, however, Natalie Cole has lived in a () of drugs, crime, and failemarrages