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【单选题】
设函数 在 可导,下列断语中( ) (1)若 在点 连续但不可导,则 不可能为 的可去间断点; (2)若 在点 不连续,则 不可能为 的第一类间断点;A.
（1）正确，（2）不正确
B.
（1）不正确（2）正确
C.
（1）和（2）均正确
D.
（1）和（2）均不正确
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【简答题】It was important for the teacher's writing on the board to be ( ) .
【简答题】It was important for children to learn to___(expression) themselves clearly.
【简答题】It was important for the child to calm _____ so the doctor could administer the flushot.
【单选题】Mum__________ me to school as she knew it was important for me to receive education，but we were so poor then．
A.
had sent
B.
sent
C.
would have sent
D.
would send
【单选题】It was important for children to learn to ( ) themselves clearly.
A.
explore
B.
exercise
C.
expressive
D.
express
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