题目

句子翻译 （共5小题；每题2分，满分10分; 每空一词） 71. 他不希望由于餐馆不受欢迎而负债。 He did not look forward to _____ in _____ because his restaurant was _____ _____ popular. 72. 事实上我靠做义工来顶替船费，这就是我为什么衣冠不整的原因了。 The fact is that I earned my passage by working as an ______ ______, which ______ ______ my appearance. 73. 我不想对你说谎，但是我不得不告诉你他的智力有限。 I don't want to ______ ______ you, but I have to say that his ______ is ______. 74. 我们又见面时如图，物块A以初速度v0滑上放在光滑水平面上的长木板B.若B固定，则A恰好滑到B的右端时停下；若B不固定，则A在B上滑行的长度为木板长的，求A和B的质量mA与mB之比.