Which of the following statements is true?
A.Neither the Greek soldiers nor their enemy could understand the message.
B.African soldiers shouted from tower to tower to pass message.
C.Telephone was invented by a French engineer.
D.Only by using telephone could people send speech sounds quickly.
第2题
猪肾类型属于()
A.复肾
B.有沟多乳头肾
C.有沟单乳头肾
D.光滑多乳头肾
E.光滑单乳头肾
第3题
马肾类型属于()
A.复肾
B.有沟多乳头肾
C.有沟单乳头肾
D.光滑多乳头肾
E.光滑单乳头肾
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