Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
scissors –n. (pl.) a tool used for cutting materials made of two blades joined together in the middle so that the sharp edges slide against one another
code –n. signs that identify or gives information about something to someone
genome –n. the complete set of genetic material of a human or another living thing
instruction –n. a statement that describes how to do something
selectively –adv. involving choosing somethings and not others
benefit –v. to be helpful to
