(2.5 分)
The straightedge is________.
A.a navigator B.a kind of emergency kit C.a piece of navigational equipment D.an instrument in lifeboat used in emergency正确答案C
(2.5 分)
The straightedge is________.
A.a navigator B.a kind of emergency kit C.a piece of navigational equipment D.an instrument in lifeboat used in emergency正确答案C