问题：
[单选题]Read the passage and then tick your choices.
Body Language
Ever since humans have inhabited the earth, they have made use of various forms of communication. Generally, this expression of thoughts and feelings has been in form of oral speech. When there is a language barrier, communication is accomplished through sign language.
Body language transmits ideas or thoughts by certain actions, either intentionally or unintentionally. A wink can be a way of flirting or indicating that the party in only joking. A nod signifies approval, while shaking the head indicates a negative reaction.
Other forms of nonlinguistic language can be found in Braille, signal flags, Morse code, and smoke signals. Road maps and picture signs also guide, warn, and instruct people,
While verbalization is the most common form of language, other systems and techniques also express human thoughts and feelings.
1. The type of the passage is _______.
Adescription
Bnarration
Cexposition
Dargumentation
2.Which of the following statements best summarizes this passage?
AWhen language is a barrier, people will find other forms of communication
BEverybody uses only one form of communication
CNonlinguistic language is invaluable to humans
DAlthough other forms of communication exist, verbalization is the fastest.
3.How many different forms of communication are mentioned here?
A5
B7
C9
D11
4.When people cannot communicate naturally, they often wink or nod, shaking the head, which are considered to be ______.?
Abody reaction
Bsign language
Clinguistic assistance?
5.Some signals like road maps or picture signs can be used to _______ people.
Aguide, warn, and instruct
Brecord, explain and save
Cteach, narrate and educate
