题目

对于可逆反应H2(g)＋I2(g)2HI(g)，在温度一定下由H2(g)和I2(g)开始反应，下列说法正确的是 A．H2(g)的消耗速率与HI(g)的生成速率之比为2∶1 B．若平衡正向移动，则V正一定增大 C．正、逆反应速率的比值是恒定的 D．达到平衡时，正、逆反应速率相等 答案：D同义句转换。1. To learn English well is very important.     _____ _____ very important _____ learn English well. 2. Kate began to study Chinese in 2004.    It _____ _____ over two years since she began to study Chinese. 3."Are there homeless people in your city?"    I asked Wang Tao. I asked Wang Tao _____ there _____ homeless people in his city. 4. Millions of people speak English as their second language.    English _____ _____ by millions of people as their second language. 5. He doesn't know where he can find a pen pal.    He doesn't know _____ _____ find a pen pal.