A.Some people don't want to take it because it's too time-consuming.
B.The results might not be objective enough.
C.The survey aims to measure Americans' happiness.
D.The survey has been conducted for three months.
A.The English word "happenstance" is about luck that happens by chance.
B.Happiness means good luck in many languages.
C.Happiness as a kind of feeling is relatively long-lasting.
D.People's feeling of happiness goes back to normal quickly.
A.shows that people all over the world care about Pakistan
B.demonstrates earthquake's great influence
C.doesn't make any sense because the survey results aren't justified
D.makes sense because everyone cares about other human beings