The visiting professor _____ giving lectures to students ______ invited to meetings at times.
| A．preferred; to being | B．preferred to; rather than |
| C．preferred; than being | D．preferred; to being |
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 |