家燕是我们熟悉的一种候鸟,请就家燕的相关知识回答下列问题:(1)家燕的身体中最发达的肌肉是____ ,该肌肉的作用是____ (2)家燕的飞行速度很快,每秒高达数十米,从外形看,它适于飞翔的特点是____ 。(3)家燕在长距离的迁飞过程中,需要消耗大量的氧气,充足的氧气供应主要是靠____ 来保证。(4)家燕有惊人的捕虫能力,是人类的朋友,请你提出2至3项保护它的措施: ________ ____ 。
有些史学家认为,“太平天国的改革方案包含了很多激进的特征,对不满的民众很有吸引力”。其方案中对民众最具吸引力的是( )
综合填空
用所给词的适当形式填空。每词限用一次。
not plan, solve, enjoy, write, fill, discover
1.Laura usually ____ beautiful music to get relaxed.
2.Be careful! She ____ the cup with hot water.
3.In the future, humans ____ more secrets of nature.
4.To our surprise, the problem ____ by the expert three days ago.
5. ____ to your parents is a good way to communicate with them.
6.—Where are you going on vacation this summer?
— I ____ it yet.