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【简答题】

听录音,把你听到的句子的序号填在括号内。
( ) 1.A.WhendoyouhaveEnglishclass?
B. Whendoyoudomorningexercises?
( ) 2.A. MybirthdayisinOctober.
B. MybirthdayisinSeptember.
( ) 3. A. TheIndependenceDayisJune14th.
B. TheIndependenceDayisJuly4th.
( ) 4.A. Aretheycountinginsects?Yes,theyare.
B. Aretheycollectingleaves?Yes,theyare.
( ) 5.A. It'sspring.Icanplanttrees.
B. It'sfall.Icanplanttrees.
( ) 6.A. Myfatherisreadingabook.
B. Myfatherisreadingthenewspaper.

题目标签:括号
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参考答案:
参考解析:
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刷刷题刷刷变学霸
举一反三

【单选题】下列去括号中,正确的是(  )

A.
a-(b-c)=a-b-c
B.
c+2(a-b)=c+2a-b
C.
a-(b-c)=a+b-c
D.
a-(b-c)=a-b+c

【单选题】下列去括号正确的是(  )

A.
-3a-(2b-c)=-3a+2b-c
B.
-3a-(2b-c)=-3a-2b-c
C.
-3a-(2b-c)=-3a+2b+c
D.
-3a-(2b-c)=-3a-2b+c

【单选题】去括号:2(a﹣b)﹣(c+d)= [ ]

A.
2a﹣b﹣c﹣d
B.
2a+2b﹣c+d
C.
2a+b﹣c﹣d
D.
2a﹣2b﹣c﹣d