题目

若sin＝ ，则cos的值是                                  ( ) A．        B．－        C.            D.  － 答案：A  Yang Cangxu has recently become hot on the Internet. He is considered as a hero, and known as “A Professional Life Saviour”, because he has saved 24 people’s lives during the past 26 years. Yang, a typical Chinese farmer, lives in Baoji, Shanxi Province. He is good at swimming, which is also his favorite. When he was young, he joined the army. ① The life in the army had a great influence on him. It also helped to form one of his characters(性格)——being ready to help others. Just seven to eight meters away from his home flows a channel ( 水渠). The water is very deep and flows fast. There is a bridge over the channel. Walking across the bridge is not an easy thing. From time to time, people fall into the water. If this happens, the person must be rescued in time. ② Otherwise, he or she will be washed away by the water. ③Yang Cangxu is always the first one to rush to the channel to save the drowning person. We must learn from him. 1.将①处翻译成汉语。 _________________________________________________ 2.根据②处内容，完成下面的句子。(每空一词) Otherwise, the water will _________him or her ________. 3.根据③处内容，其将改为定语从句。(每空一词) Yang Cangxu is always the first one _______ _______ to the channel to save the drowning person.