听力原文：（A) The bags are being unloaded.（B) The bags are hanging on a rack.（C) The bags a

听力原文：W: Tony, who are the street people？ How did they get to be living in the street？M

听力原文：There are exceptions to the rule of male insects being smaller than the females,

听力原文：（A) Some building materials are piled up on the ground.（B) A brick wall is being

听力原文：（A) Some people are looking for a statue.（B) The floor is being cleaned.（C) Peopl

听力原文：（A) The posters on the side of the building are being put up.（B) Some people are

听力原文：Since we are all social beings, the quality of our lives depends in large measure