By the time you have finished this book, your meal ______ cold.

A．gets

B．has got

C．will get

D．is getting

钠石灰在吸收二氧化碳时不会产生（）

A.热

B.水

C.碳酸钙

D.酸性物质

E.与氧化亚氮接触产生有毒物质