172. The farmers were more anxious for rain than the people in the city because they had more _____.

　A. at length B. at last C. at stake D. at ease

171. It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.

　A. process B. attention C. measure D. part

170. The author of the report is well _____ with the problems in the hospital because he has been working there for many years.

　A. acquainted B. informed C. enlightened D. advised

169. With the change of the economic foundation the entire immense superstructure is _____ rapidly transformed.

　A. anything but B. more or less C. at large D. any more

168. When I took his temperature, it was two degrees above _____.

　A. average B. ordinary C. regular D. normal

167. Even if they are on sale, these refrigerators are equal in price to, if not more expensive than, _____ at the other store.

　A. anyone B. the others C. that D. the ones

166. His landlady gave him a week's _____ to leave the flat.

　A. threat B. notice C. advice D. caution

165. Her skirt had been so _____ in packing that she had to iron it before going out.

　A. faded B. torn C. dirty D. crushed

164. Some people either _____ avoid questions of right and wrong or remain neutral about them.

　A. violently B. sincerely C. properly D. deliberately

163. If he refuses to _____ my plan, I can probably find someone more cooperative.

　A. put up with B. fall in with C. do away with D. get along with