观察鲫鱼时，鲫鱼的身体呈____ ，这种形体在游泳时可以起到____ 的作用。

在我国浩如烟海的史书典籍中，以哲学智慧解决难题的典故不胜枚举。下列典故中体现创新意识的是（   ）。

①曹冲称象  ②田忌赛马  ③愚公移山  ④庖丁解牛

阅读短文，判断正误。对的写正确，错的写错误。

Ken: Today is Sue's birthday. Let's buy a gift for her.

Ann: OK. Let's go.

Ken：What about these sweatpants?

Ann: Oh, no. They aren't her style. She likes cool clothes.

Ken: Oh, yes. She likes music. This is the latest CD. Does she like this one?

Ann: She likes pop music, but she prefers Jazz music. This one is OK.

Ken: How much is it?

Assistant: $13.

Ken: We'll take it. Thank you.

Assistant: That's all right. Bye!

教材中有许多实验与现象的插图，图甲是比较物质的____；图乙说明星系在____我们；图丙说明分子间存在____．图丁红墨水在水中散开，说明____

最能反映宋代市民生活丰富多彩的场所是（   ）