【问】 动词rise与动词raise有何区别?
 【答】 rise(rose，risen)是个不及物动词，例句见rise/arise。raise(raised，raised)则是个及物动
 词，如raise a flag( a hat，a glass)，raise prices(the wages，the salary，the temperature，thevoice)：
 1. The weight is too heavy;I can't raise it. (Palmer)
 这件东西太重，我拿不起来。
 2. Have you raised the wages?
 你提高工资了吗?
 3. That discussion raised my interest. (FWF)
 那场讨论引起了我的兴趣。
 4. The mother raised her child from the ground.
 母亲把孩子从地上抱起来。
 改正下面句子里的错误：
 1.Many firms try to survive by rising productivity.
 2. She rose her hand to ask a question.
 3. The class raised when the teacher entered.
 请做下面的英语试题：
 1. When I asked George what he thought of the situation he didn't speak，just raised his
 shoulders to show disdain.
 (A) shuffled (B) shrouded (C) shrugged (D) shucked.
 2. This island has vegetation;it above the sea. (TOEFL，72. 6;74. 6)
 3. When the other guests and I to leave the table， the host pushed his chair and stood up to us to the living room. (TOEFL， 74. 9)
 4.I perceive the fish to rise out of the water.(TOEFL教程)
 5. For a good two hours the boat swung along in a light breeze until the fisherman refused to go further for fear of a risen storm . (EPT)