11.Compared with last year, our summer crop output has increased 10 percent this year.

59.No one can preventby modem technology.

58.When the education systems of China and Britain, the professor gave his own comment.

57.from space, our earth, with water covering 70% of its surface, appears to be a ublue planetn.

56.finished his work, he had to stay at home at the weekend.

55.It is no use me not to worry about his injury.

54.That was so serious a matter that I had no choice butthe police.

53.My mobile phone isn＇t working. It.

52.I usedon the left in England, but I soon got usedon the right in China.

51.He hurried to the hospital, onlyhis father had just died.

50.When the little girl awoke, she found herselfby a group of soldiers.