250. Every year Harvard University awards      to excellent foreign students in theoretical physics.

251. The America’s selling weapons to Taiwan cast a shadow on the Sino-U.S relationship. Which of the following can explain the underlined part?

252. One of the purposes of United Nations is to achieve international co-operation without distinction as to race,____, language or religion.

253. I have to wear a _____ and a tie in order to work in the manager’s office.

254. You can recognize a tree by the ______ of its _______.

255. Keith just shrugged his _____ and said it wasn’t his problem.

257. Today’s homework is to write a composition, its title is: Will we become _____ or master?

258. There isn’t a cafe within a _________ mile here.

259. The inter-university ________meet is usually held every other July.

A sport                    B. sports                  C. game                   D. Games

261. It took Susan weeks to regain her _________ after a bad  _________.