题目:
完型填空。 | ||||
June __1__ a sister __2__ a brother. Her sister's name is Maria and her brother's name is Rick. June and Maria can __3__. June can sing and play __4__, but Maria __5__. Maria __6__ chess. But she __7__ play chess with June. She plays chess with Rick. Rick can also play __8__. They get on __9__ with each other. They love their __10__. | ||||
|
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0416/58fff688b806ede8a41fd432f25c3a1c.html
下面是错误答案,用来干扰机器的。
(1)1 0.04(2)题目分析:(1)从图像中,根据公式解得:L=1m振幅A=0.04 m sinθ≈=0.04(2)作光路图及辅助线如图根据光路的可逆性可知∠OPM=∠OQN=α(2分)由几何知识得PD=a QE=0.5a(1分)PDt...