题目

阅读理解 The practice of students endlessly copying letters and sentences from a blackboard is a thing of the past. With the coming of new technologies like computers and smart phone, writing by hand has become something of nostalgic(怀旧的) skill. However, while today's educators are using more and more technologies in their teaching, many believe basic handwriting skills are still necessary for students to be successful —both in school and in life. Virginia Berninger, professor of educational psychology at the University of Washington, says it's important to continue teaching handwr 某温度下，体积一定的密闭容器中进行如下可逆反应：Ｘ（g＋Ｙ（g）Ｚ（g）＋Ｗ（s） ΔH＞0 下列叙述正确的是 A．加入少量Ｗ，逆反应速率增大    B．当容器中气体压强不变时，反应达到平衡 C．升高温度，平衡逆向移动        D．平衡后加入Ｘ，上述反应的ΔH增大