【单选题】
A powerful indictment of America’s disregard of ecology, Silent Spring was aimed chiefly at the wholesale use of chemical pesticide, especially DDT.
①
A．有力地控诉了美国对生态的忽视，《沉默的春天》主要是针对大规模使用农药，特别是滴滴涕。
②
B．一个对美国忽视生态的有力控诉，《沉默的春天》主要是针对大规模使用农药，特别是滴滴涕。
③
C．《沉默的春天》是对美国忽视生态的有力控诉，它主要是针对大规模使用农药，特别是对滴滴涕的使用进行了控诉。
④
D．《沉默的春天》对美国忽视生态，主要是针对大规模使用农药，特别是滴滴涕的使用，进行了有力的控诉。
【单选题】
29. As they cant afford to let the situation get worse, they will take some necessary ____.
①
decisions
②
sides
③
directions
④
steps
【单选题】
As for words which do not often occur in everyday situation, you just need to be able to ____.
①
recognize them
②
nod at them
③
concentrate much on them
④
practice using them constantly
【单选题】
20. _____ the sight of the poor and the sick, the government had no way out but to decided to reform..
①
Seeing
②
Confronted with
③
Confronting
④
Looking at
【单选题】
He believed his lucky number was ten, so he decided to live on the ______ floor.
①
lowest
②
ten
③
tenth
【单选题】
Shed decided to join a package tour.Why_______ so much preparations before the tour?
①
had she done
②
she had done
③
has she done