A:a(a-2)
B:a(a+2)
C:a(a2-2)
D:a(2-a)
(2016•丽水)北京时间2016年2月12日,美国科学家宜布探测到来自遥远天体的引力波信号,这个发现可以帮助科学家探索宇宙的诞生和发展,下列说法正确的是( )
End of Term Report
Student's name
Zhang Xing
Subject
English
Teacher
Mr. Dickens
At the beginning of this term
He found that studying English was very ____
In writing
His ____is better.
In speaking
He can have English ____with his friends and with me.
He can answer my questions in English____.
Next term
If he ____like this, he will do much better.
去掉偏旁,组成新字,再组词。
征____ ____ 研____ ____ 坛____ ____