问题
解答题
蚯蚓体内虽有肌肉,但没有骨骼,这是它不能快速运动的一个原因.______.
答案
蚯蚓通过肌肉和刚毛的配合使身体运动,身体分节可以增强运动的灵活性,没有骨骼支撑肌肉,是导致他移动缓慢的原因之一,但只有这样,才可以承受土壤带来的压力,否则在地下无法生活,就像深海的软体动物一样,水母、乌鱼等,都是这样的.
故答案为:√
蚯蚓体内虽有肌肉,但没有骨骼,这是它不能快速运动的一个原因.______.
蚯蚓通过肌肉和刚毛的配合使身体运动,身体分节可以增强运动的灵活性,没有骨骼支撑肌肉,是导致他移动缓慢的原因之一,但只有这样,才可以承受土壤带来的压力,否则在地下无法生活,就像深海的软体动物一样,水母、乌鱼等,都是这样的.
故答案为:√
从方框中选择恰当的词并用其适当形式填空。 | |
3_____ all kinds of shops on it. If you want 4_____ books, you can go to the Knowledge Bookstore. You can find any book you like there. There is a big supermarket 5_____ from the bookstore. The 6_____ in this supermarket are good and cheap (便宜的). If you want. 7_____ a movie, you can go to the movie house on Xingfu Street. It is between the bank and the supermarket. 8_____ the supermarket is a park. Please come and 9_____ the quiet and beautiful park if you are tired. You can 10_____ for a walk, read books and play the guitar there. |