1.______ the heavy rain, they continued to walk.

A.Thanks to         B.Despite           C.Though            D.Due to

2.To our disappointment, very few scientists ______ completely new answers to the world’s problems at the meeting.

A.came up           B.came out          C.came across       D.came up with

3.As the bell rang, the students went out _______.

A.one by one        B.one another       C.each other        D.one after one

4.She has turned down several invitations to star at shows in order to _______ her studies.

A.settle for        B.concentrate on    C.burn up           D.turn up

5.Parents _____ should act as good examples for children.

A.in advance        B.in detail         C.in particular     D.in panic