56. In some ______ (工业的) areas, the air condition is not so good.

55. The bus was c______, so I decided to get off ahead of time.

54. A new f______ is being built in our city. We will go everywhere more easily.

53. a particular place or position where someone or something is -______

52. an organization to which you give money so that it can give money and help to people who are poor, ill etc. - ______

51. a list of names, subjects etc. at the back of a book -______

50. From the sentence “The pull between two bodies is proportional to the product of their masses.” We can infer that the pull between　　　　 .

A.　　 the sun and the moon is greater than between the sun and the earth

B.　　　 the earth and the moon is greater than that between the sun and the earth

C.　　　 the sun and the earth is greater than that between the earth and the moon

D.　　 the sun and the earth is the same as that between the earth and the moon

第四节 词汇(共10小题；每小题1.5分，满分15分)

根据英文注释、首字母提示或汉语提示写出相应的单词。

49. From the passage we can see 　　　　　　.

A.　　 all the objects, big or small, must exert the same pull on one another

B.　　　 large objects exert the same pull on anybody as small objects

C.　　　 small objects exert the same on large ones

D.　　 each object in the universe exerts a pull on all other objects

48. Which two planets make the longest trips around the sun among all the planets in the solar system?

A. Mercury and Venus.　　　　　　　　 B. Neptune and Pluto.

C. Saturn and Uranus.　　　　　　　　 D. Mars and Jupiter.

47. Which of the following statements is true?

A. The earth is farther from the sun than any other planet in the sun’s family.

B. The planets travel in the sky in their own ways disorderly instead of　　　　 definite paths.

C. The earth is the nearest to the sun among the planets.

D.　　 Of all the planets, the earth makes the third longest trip around the sun.