《国家气象灾害应急预案》中指出，建立和完善气象灾害预测预报体系，加强对灾害性天气事件

氢气是未来理想能源，天然气是人们目前已广泛使用的一种化石能源。

（1）分别写出氢气和天然气（主要成分CH₄）燃烧的化学方程式。

（2）比较上面两个反应，你会发现它们有许多相同之处，请你写出其中的一条。

如何使用减量法称取固体药品？

简述400VMCC电动机停电操作步骤。

实行了等级森严的“种姓制度”的国家是 [ ]

A．古代中国西周

B．古代埃及

C．古代印度

D．古巴比伦王国

Questions 24-30

·Look at the questions for this part.
·You will hear a passage about "WTO ". You will listen to it twice.
·For Questions 24-30, indicate which of the alternatives A, B, or C is the most appropriate response.
·Mark one letter A, B, or C on the Answer Sheet.

Which of the following is NOT mentioned as one of the things the WTO is authorized to do

A．Administering and policing new and existing free trade agreements.

B．Settling trade disputes among WTO member states.

C．Overseeing the economic policies of WTO member states.