What is the probable relation between the two speakers
A math teacher and his colleague.
B. A teacher and his student.
C. A librarian and a student.
D. A student and his classmat
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电视机的寿命试验适合全数检验。( )
A. 对
B. 错
Whose wallet was lost
A. Wang Jun’s
B. Liu Feng’s
C. Li Hong’s
D. Zhang Jun’s
Questions 11--13 are based on the following passage. In Nick’s opinion, why didn’t his relatives meet him at the airport
A. They missed the flight.
B. They were busy.
C. Their car broke down.
D. They were caught in the traffi
屈服强度400牛顿/平方毫米的经酸洗的热轧非合金钢板(规格:宽800毫米、长2,000毫米、厚4毫米)