If you have a job，________ yourself to it and finally you'll succeed.(2010·四川)
| A．do devote | B．don't devote |
| C．devoting | D．not devoting |
280. Take on a(n)__________ with you. It looks like raining.
| A．underwear | B．overcoat | C．water-proof jacket | D．Umbrella |
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 |