题目内容
（请给出正确答案）
[主观题]
Of the following pairs of sentences，can A entail B in each case？ 在下列句子中，各组的A都
能蕴涵B 吗？ (1)A．John is a bachelor． B．John is a man． (2)A．Janet plays the fiddle． B．Someone plays a musical instrument． (3)A．I’ve done my homework． B．I haven’t brushed my teeth． (4)A．Some of the students came to my party． B．Not all of the students came to my party．
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