2．One purpose for students to consult an online dictionary is to________．

A．change words constantly

B．produce lexical items

C．learn the new words

D．find out how dictionaries are written

C　解析：细节理解题。由文章第二段第三、四句可知。

3．We can infer from Paragraph 3 that ________．

A．the English language is rather open

B．words are formed in three ways

C．most English words have just one meaning

D．chat room is a new word from layering

A　解析：推理判断题。第三段介绍了英语增添新词的三种方法，说明英语是开放的。

4．The underlined word "polysemy" refers to ________．

A．words that have more than one meaning

B．words taken into one language from another

C．words formed by taking in existing words

D．words in the online dictionaries

A　解析：词义猜测题。由第三段倒数第二句"Third，new words can come from layering(分层)，when an existing word splits into more than one meaning."可知。

　　Sometimes people add to what they say even when they don't talk.Gestures are the"silent language"of every culture.We point a finger or move another part of the body to show what we want to say.It is important to know the body language of every country or we may be misunderstood.

　　In the United States，people greet each other with a handshake in a formal introduction.The handshake must be firm.If the handshake is weak，it is a sign of weakness or unfriendliness.Friends may place a hand on the other's arm or shoulder.Some people，usually women，greet a friend with a hug.

　　Space is important to Americans.When two people talk to each other，they usually stand about two and a half feet away and at an angle，so they are not facing each other directly.Americans get uncomfortable when a person stands too close.They will move back to have their space.If Americans touch another person by accident，they say，"Pardon me."or"Excuse me."

Americans like to look at the other person in the eyes when they are talking.If you don't do so，it means you are bored，hiding something，or are not interested.But when you stare at someone