刀具材料应具备有高的硬度和强度及红硬性
A. 对
B. 错
In this book,it has _unit.
A. eight
B. four
C. two
D. nine
What the unit one main idea.
A. How to be a asuccessful language learner
B. He was a very successful teacher
C. The pub is open to any adult to enter
D. Everyone has different opinions
Successfui language learners with a_.
A. purpose
B. interested
C. regularly
D. order
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