A.6<AD<8 | B.2<AD<14 | C.1<AD<7 | D.无法确定 |
|
A.2cm | B.3cm | C.4cm | D.5cm |
A.b+a-3c | B.a+b+c | C.3a+3b+3c | D.a+b-c |
A.10cm长的木棒 | B.20cm长的木棒 |
C.50cm长的木棒 | D.60cm长的木棒 |
A.1cm,2cm,3cm | B.3cm,4cm,5cm |
C.5cm,6cm,11cm | D.7cm,3cm,3cm |
A.5m | B.15m | C.20m | D.28m |
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