【单选题】Mr. Smith often goes to the park near his house to ____ the pressure of work.
【简答题】My shoes wear off faster at the heel.
【单选题】若y(t)= f(t)* h(t),则f(2t)* h(2t)等于( )
【单选题】The excitement about the new instructor is already beginning to wear off.
A.
I know. It's so nice to see the students so interested.
B.
The students are bored again?