It has been five years since this party____. Many people wonder whether it will stay on.
| A．has come to power | B．came to power | C．has been in power | D．in power |
279. The Palace Museum has many art treasures. In this sentence, "treasure" means ____.
| A．precious things | B．money | C．cheap things | D．unimportant things |
278. The road constant improvements can’t keep pace with the increasing ____ .
| A．trucks | B．private cars | C．buses | D．Traffic |
277. If you want to get there quickly, you'd better take the track in the forest. The underlined word means ____.
| A．a path | B．a car | C．channel | D．a canal |
276. We should take good care of our ____. Don’t forget to rinse your mouth after meals.
| A．toes | B．eyes | C．hands | D．Teeth |
275. A telephone is an instrument by which we can speak to people far away. The underlined word means ____.
| A．a tool | B．an experiment | C．an expression | D．an instruction |