6.参考答案C说明分析sinc c因为8=5c,sinC=2 sin Bcos B,所以由正弦定理得csB2sinB2=5,sinB=3,所以C25因为△ABC是锐角三角形,所以cC=7.所以smA=sm(B+C= sin bcos c+ cos Bsin c=1x因为a=13,所以sin A SIn B=所以△ABC的面积为S

第四部分写作第一节Last week our school held the Sports Week. We hade: lots of activities, such as running, hiking, and many kindsof ball games. We even had an exciting two-day sportsmeeting.Nowadays students are busy with their studies anddont get much exercise. This really worries our schoolauthority. So our school started the Sports WeekThe Sports Week proves to be a great success. It notonly builds up our bodies, but trains our characters aswell. Without health, there is no real happiness in life. Weshould work out regularly to keep fit.

以上就是2022英语周报新课程HNY答案，更多英语周报答案请关注本网站。

本文地址： http://www.ncneedu.cn/post/23773.html

文章来源：admin

版权声明：除非特别标注，否则均为本站原创文章，转载时请以链接形式注明文章出处。