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【简答题】
听短文，从所给选项中选出最佳答案。听两遍。 1. The little dog looks at the well (井) and finds _______. [ ] A. a little boy in it B. a little girl in it C. a little dog in it 2. ______ goes to look into the well, too. [ ] A. Mike B. Jim C. Tom 3. The little dog barks all the morning because _______. [ ] A. he is hungry B. he is thirsty C. he is surprised 4. The boy looks into the well and gets to know _______. [ ] A. why the dog barks B. what the dog wants C. there is too much water 5. Which is not right? [ ] A. Mike wants the dog to leave the well. B. The dog barks for help all day. C. The dog in the water is the little dog's reflection (倒影) in the water.
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举一反三
【单选题】导线的坐标增量闭合差调整时，应使纵、横坐标增量改正数之和等于（ ）
A.
纵、横坐标增值量闭合差，其符号相同
B.
导线全长闭合差，其符号相同
C.
纵、横坐标增量闭合差，其符号相反
D.
等于零
【单选题】导线的坐标增量闭合差调整时,应使纵、横坐标增量改正数之和等于( )。
A.
纵、横坐标增量闭合差,其符号相同
B.
导线全长闭合差,其符号相同
C.
纵、横坐标增量闭合差,其符号相反
D.
零
【简答题】若类A继承类B，类B继承类C，则______。
【简答题】如果类C继承类B，类B继承类A，则类C继承类A，这说明继承具有【 】。