口算38×2时，可以先算2×____，再算2×____，最后算____+____，得____．

对下列诗词的赏析，都有误的一组是（ ）
① 闻说双溪春尚好，也拟泛轻舟。
赏析：“春尚好”“泛轻舟”用词轻松，节奏明快，恰到好处地表现了词人随遇而安的喜悦之情。
② 过尽千帆皆不是，斜晖脉脉水悠悠。
赏析：句中的“斜晖脉脉水悠悠”一句，运用借景抒情、寓情于景的写法，形象而又含蓄地表达了这位女子整天等待远行爱人而未果的失望、痛苦的心情。
③仍怜故乡水，万里送行舟。
赏析：从尾联来看，这首诗写的是朋友为诗人送行，抒发了作者对故乡友人真挚情谊的感动。
④持节云中，何日遣冯唐？
赏析：此句作者以魏尚自比，表达了自己期望为国御敌立功的壮志。

Cooking and Learning
In this E-book package, we have four e-books.

Fun with Food This fun e-book is filled with exercises --- photo tests, word exams, riddle games coloring pages and exercises on learning more about food.	Kids Food Science Experiments Learn more about science and cooking with these food science experiments and instructions for kids.
Food Facts E-Book To go with the kids cooking lessons e-book, we’ve put our food facts into one e-book. Each part is easy to print off. You can keep it in the kitchen and teach kids facts about the food we eat. The Food Facts E-Book has over 60 pages.	Kids Cooking Lessons E-Book We’ve brought all our kids cooking lessons together into one easy e-book. We have a unit for each age group. This e-book is just planned to help you with cooking experience in the kitchen. If you’d like our lessons in e-book form with some learning exercises and other things, then this e-book is for you.

关于礼仪，下列说法正确的有(   )
①礼仪是一门学问，有特定的要求②随着社会的发展不断变化③礼仪的掌握是自然而然形成的④所有传统的礼仪都要遵守

活动中，第一小组植树2棵，第二小组是第一小组的4倍，而第三小组又是第二小组的4倍，第三小组植树多少棵？