▲ 下篇短文共有 5 個空格，為第 26 － 30 題，請依短文文意，選出一個最適合該空格的答案。       People take different actions when seeing a stranger who needs help. In psychology, thereare two theories about the way people act in that situation,__26__ the bystander effect and theGood Samaritan effect. A bystander is a person who sees a problem but just stands and watches,and a Good Samaritan refers to the one who helps a stranger in trouble. The bystander doesn’t __27__ to help, whereas the Good Samaritan jumps in to lend a hand. A bystander does not helpbecause he or she does not want to look foolish by making a mistake when trying to help out. __28__ , a Good Samaritan helps because he or she wants others to see how helpful he or she is.In addition, a Good Samaritan pays close attention __29__ other Good Samaritans. His or heraction is based on what others are doing. If he or she sees others helping, he or she is more likelyto help__30__ . So, when you see a stranger in need, will you be a bystander or a GoodSamaritan?
【題組】26.
(A) called
(B) calling
(C) and called
(D) while calling