10.A.change B.bother

C.help D.happen

11.A.nutrition B.blood

C.time D.air

12.A.observation B.devotion

C.appreciation D.evaluation

13.A.gift B.hand

C.promise D.treat

14.A.homework B.appointment

C.movies D.gymnastics

15.A.suddenly B.regularly

C.eventually D.recently

16.A.advise B.encourage

C.serve D.instruct

17.A.choice B.thought

C.glance D.chance

18.A.words B.ideas

C.flowers D.visits

19.A.but B.then C.so D.for

20.A.enjoying B.gaining

C.discovering D.spreading

Ⅱ.阅读理解

　　Australian scientists say an organic compound used by Indian women to paint dots or bindi on their foreheads could hold the key to a breakthrough in cancer treatment.Rose Bengal(玫瑰红) was first used in the early 1900s as a dye for food，textiles and cosmetics.But now it is proving to be a useful weapon in the fight against skin cancer.

　　Television advertisements constantly warn of the dangers of overexposure to the fierce sun.Among them is the possibility of the disease melanoma(黑素瘤)，a type of skin cancer.More than 1,200 Australians die every year from the disease.

　　Initial trials of a solution of Rose Bengal injected into some melanoma cells have had a 75 percent success rate in controlling the disease.Professor John Thompson，the director of the Melanoma Unit at the University of Sydney，says this organic dye could become a powerful cancer­fighting treatment.

"We believe it works by getting into the tumor(肿块) cells and causing them to self­destruct.But the exact mechanism by which it works is not totally clear.It's not useful for people who have a primary melanoma.The treatment of primary melanoma is surgical excision(切除)，" he said."It's useful to inject tumors for people who have recurrences；when the primary