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【判断题】
汞蒸气无色无味，比空气重，具有毒性。此外，汞还具有粘度小、流动性大、吸附性强、易被生物体吸收等特点。A.
正确
B.
错误
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举一反三
【单选题】Section ADirections: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the c...
A.
Mr.Wright's future development.
B.
Mr.Wright's new appointment.
C.
A vacant position.
D.
Mr.Wright's new job.
【简答题】万维网(WWW)又称为( ),是INTERNET中应用最广泛的领域之一
【简答题】In this section, you will hear five short conversations between two speakers. At the end of each conversation, a question will be asked about what was said. The conversations and the questions will be...
【单选题】Section A Directions:In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the c...
A.
Customer and salesman.
B.
Colleagues.
C.
Employee and boss.
D.
Classmates.
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