6.By rail it is cheaper to buy a return ticket than two ___ tickets.
A) individual
B) single
C) singular
D) separate

7.We’re all in favor of spending whatever is necessary to ___ air pollution.
A) struggle
B) combat
C) conflict
D) dismiss

8.We must leave nothing to ___.
A) possibility
B) wish
C) opportunity
D) chance

9.He ___ the members of the audience to their seats.
A) accompanied
B) distributed wｗw.ExamＷ.CoM
C) attended
D) conducted
　
10. While in London, we paid a visit to the hospital founded ___ the nurse Florence Nightingale.
A) in line with
B) in favor of
C) in honor of
D) in place of

6.答案：B  7.答案：B 8.答案：D  9.答案：D  10. 答案：C