绿色植物在生态系统中被称为生产者的原因是（     ）

A.能储存能量            Ｂ.能放出能量

C.能光合作用制造有机物  Ｄ.能呼吸消耗有机物

Passage Three
Questions 33 to 35 are based on the passage you have just heard.

A．Wearing jackets is not a custom of, Thailand.

B．Wearing shirt sleeves has become a fashion in Thailand.

C．People usually wear jackets to work in Thailand.

D．The government has encountered an energy crisis.