Flash Skills are a line of mini-workbooks designed to focus on specific skills. Each book uses a unique theme and adorable art to help young learners master math and reading through practice and reinforcement. Fun full-color stickers motivate and reward.

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斯蒂芬·温伯格 诺贝尔物理学奖得主，曾获美国国家科学奖章、刘易斯•托马斯奖等多项殊荣。曾任得克萨斯大学奥斯汀分校教授，并兼任美国国家科学院院士、伦敦皇家学会外籍会员、美国哲学学会会员等。 温伯格出版了多部影响力很大的理论物理教材。在专业领域之外，他致力于将科学理念与人文知识相结合，著有《最初三分钟》《终极理论之梦》《仰望苍穹》等书。

《第三个女郎》讲述了三个年轻女郎在伦敦城内合租一套公寓。第一个是冷静而能干的私人秘书；第二个在艺术圈里混事。第三个女郎在早餐时出现了，当赫尔克里•波洛享用着奶油蛋卷和巧克力时，她冲进来告诉他，自己是个杀人凶手——转而又消失不见了。 波洛后来一步步探悉围绕这神秘的第三个女郎的种种传闻——她的家庭内幕，以及她的失踪，等等。然而，在伟大的侦探宣布这第三个女郎是否有罪，抑或是否精神错乱之前，他需要提供强有力的证据。 A perplexed girl thinks she might have killed someone...Three single girls shared the same London flat. The first worked as a secretary; the second was an artist; the third ...(展开全部)

Three young women share a London flat. The first is a coolly efficient secretary. The second is an artist. The third interrupts Hercule Poirot’s breakfast confessing that she is a murderer—and then promptly disappears. Slowly, Poirot learns of the rumors surrounding the mysterious third girl, her family, and her disappearance. Yet hard evidence is needed before the great detect...(展开全部)

《第三个女郎》讲述了三个年轻女郎在伦敦城内合租一套公寓。第一个是冷静而能干的私人秘书；第二个在艺术圈里混事。第三个女郎在早餐时出现了，当赫尔克里•波洛享用着奶油蛋卷和巧克力时，她冲进来告诉他，自己是个杀人凶手——转而又消失不见了。 波洛后来一步步探悉围绕这神秘的第三个女郎的种种传闻——她的家庭内幕，以及她的失踪，等等。然而，在伟大的侦探宣布这第三个女郎是否有罪，抑或是否精神错乱之前，他需要提供强有力的证据。 A perplexed girl thinks she might have killed someone...Three single girls shared the same London flat. The first worked as a secretary; the second was an artist; the third ...(展开全部)

Three young women share a London flat. The first is a coolly efficient secretary. The second is an artist. The third interrupts Hercule Poirot’s breakfast confessing that she is a murderer—and then promptly disappears. Slowly, Poirot learns of the rumors surrounding the mysterious third girl, her family, and her disappearance. Yet hard evidence is needed before the great detect...(展开全部)

Everything about the young girl strikes Poirot as odd--from her confession to a murder she didn't commit to her disappearance. What's her secret? Poirot suspects that it's going to be a killer.

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斯蒂芬·温伯格 诺贝尔物理学奖得主，曾获美国国家科学奖章、刘易斯•托马斯奖等多项殊荣。曾任得克萨斯大学奥斯汀分校教授，并兼任美国国家科学院院士、伦敦皇家学会外籍会员、美国哲学学会会员等。 温伯格出版了多部影响力很大的理论物理教材。在专业领域之外，他致力于将科学理念与人文知识相结合，著有《最初三分钟》《终极理论之梦》《仰望苍穹》等书。