根据单词的首字母提示完成句子。
小题1:The determination and patience of the scientists was rewarded in 1996 with a b___________ --- the cloning of Dolly the sheep.
小题2:In 1846 the United States d__________war on Mexico and after it lost the war, Mexico had to give California to the United States.
小题3:Henry wanted Eliza to make the a____________ of the American ambassador, so he could act as a referee and judge whether he had passed her off as a lady.
小题4:What are your c______________ for evaluating the quality of a bottle of wine?
小题5:He was a specialist in the study of bones and found it challenging to search for and i_________ bones of early peoples.
小题1:breakthrough
小题2:declared
小题3:acquaintance
小题4:criteria
小题5:identify
小题1:突破；这里是指克隆羊是克隆技术的突破。
小题2:declare是指宣布重大事件。
小题3:make the acquaintance of 认识，熟悉。
小题4:标准；是criterion的复数。
小题5:辨别。这里是指辨别以前人的骨头。