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【简答题】
右图中有A 1 A 9 ， … ，A 1s 共1s个点，以这些点为顶点，可以画多少个不同的三角形？
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皮皮学刷刷变学霸
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【简答题】Please hold on
to your dream one day it
comes true.A. if B. until C. unless D. though
【简答题】As one comes to some crossroads, he or she sees a sign which says that drivers have to stop when they come to the main road ahead. At other crossroads, drivers have to go slow, but they do not actuall...
【简答题】Please hold on to your dream ____one day it comes true.
【单选题】根据以下资料，回答1~4题。 As one approaches some crossroads, one comes to a sign which says that drivers have to stop when they come to the main road ahead．At other crossroads, drivers have to go slow, but they ...
A.
there is s stop sign
B.
there is a slow sign
C.
you are on the main road
D.
you are on the crossroad
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