24My parents never let me ( ) alone.

1. Health experts in many countries still ( ) their ideas about the relationships between our food and our health.

51 Directions: For each blank in the following passage, there are four choices given below and marked A, B, C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the Answer Sheet. The death of a child, ( )51( ) one’s own child, is something the mind can hardly comprehend. It seems to go ( )52( ) nature. The end of a life that is still forming ( )53( ) has just begun is an almost unthinkable cruelty. But it happens. Parents sometimes must witness the illness and death of the children ( )54( ) whom they gave birth. And ( )55( ) will ever fill the empty place that the dead child leaves behind. Parents ( )56( ) to die before their children, which is the natural order of life events. When the situation is reversed and a child dies ( )57( ) the parents it seems wrong. Yet we never know why one person dies and another lives. But we do know ( )58( ) a child is gone, the parents still have a future, as grey and worthless as it may at first seem. Death may take the child, but the love never ( )59( ). The sorrow after a child’s death is one of the longest and hardest type of ( )60( ) to live with. And it takes long to deal with the parents’ own emotions.

39.认识论上两条根本对立的认识路线是

21. He ordered the work ( ).

25( ) in the strange city, poor Bill fell to ( ).

12

4. The station? Take the second turning ( ).

26We all enjoy working ( ) him because he is a kind leader.

228.“一国两制”的前提是