四、词汇检测(共10小题;每小题1分，满分10分)

    根据下列句子及所给汉语注释或通过上下文，在答题卡上标有题号的横线上，写出空缺处各单词的正确形式。每空只写一词。

38. The students in Class 1 are        (计划)a visit to the Palace Museum these days.

39. Vegetables are best when they are         (新鲜的)，and they're good for health.

40. Don't         (抬起)your heads when you are doing the exam.

41. If the Earth becomes too seriously        (污染)，perhaps we'll have no choice but to move to Mars.

42. Mr Jiang wanted to buy a robot in order to make his life much         (容易).

43. How clever the boy is! He turned the waste into boxes in different          (形状).

44. Dress      (合适地)on the day when you go for an interview.

45.一English is like a         . It makes people in the east and west understand each other.

   一You're right. It's really important for us to learn it well.

46.一Where can I find Jack?

   一Just walk       on. He's waiting for you at the end of the road.

47.一Do you know how to make coffee?

   一 Yes, put the coffee and the sugar into the cup and       them up.