Which of the following statements about communication by touch is true?
A.Touch is not important as a means of communication.
B.There is no well-developed system of communication based on touch.
C.It is possible to communicate intelligently by touch alone.
D.Touch must accompany visual communication.
第1题
关于该国外债情况的说法,正确的是()。
A.该国负债率在警戒线以内
B.该国债务率在警戒线以内
C.该国偿债率在警戒线以内
D.该国负债率和债务率超过了警戒线
第4题
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第7题
第8题
第9题
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