开普勒发现行星运动的第三定律之后,开始编什么?这个表在后来被航海家和天文学家使用了一百多年。()
参考答案:鲁道夫新表
仰泳腿打水的作用主要是()。
A、产生一定的推进力
B、保持身体位置
C、给身体一个稳定的支撑力
D、以上均是
Questions 15 to 17 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage.
From good movies we can ______.
A.learn to become a better person
B.learn to make an entertaining film
C.understand life a little better
D.find better ways to gain our ends