①蝉、蚂蚁、蜘蛛等昆虫的习性对于我有了具体的了解。

②居住在草地上的蟋蟀，几乎差不多和蝉一样有名。

    What about my plans for the summer vacation? First, I will go to Shanghai with my sister Kate. There are many interesting places in Shanghai, and we can also taste the delicious food there. After that, I will spend some time reading books. I will play tennis with my friends, too.—— Peter

    I made some plans for my summer vacation. First, I will help more at home. My parents are always busy, so I'll help them with the housework and let them have more time to relax. Second, I will practice the violin every day. Third, I think the vacation is a good time for me to do some sports, such as running and swimming. I am sure my summer vacation will be wonderful.——Tom

    After about four months' study, the summer vacation is coming. Here are my plans. First, I will leave enough time for my new lessons. I will also read some great books. Second, I will go to Xi'an and stay there for two weeks. I think the trip will be wonderful. Then, I will come back and enjoy myself with my friends. We will go swimming, shopping, etc.——Amy

飞机是共业革命新阶段的重要成果。为早期飞机提供动力的机器是(    )

假如一个性状总是由父亲直接传给儿子，又由儿子直接传给孙子．那么控制这个性状的基因最可能的位置是（　　）