看拼音写词语。
yú shì
jiàn lì wàng yì
yāo qiú
dào lù
wàng ēn fù yì
____
Since the exchange student was born in America, he simply has no idea life will be like in China.
(参考数据: 3 ≈1.732,sin15°≈0.2588,sin7.5°≈0.1305)
溜索是一种古老的渡河工具,现已演变为游乐项目.如图所示,滑轮、保险绳索与人体连接,粗钢索两端连接在固定桩上.人从高处平台的A点出发,借助几十米的落差,沿钢索顺势而下,滑过最低点C,到达B点时速度为零.下列说法中正确的有( )