12.　 ________ confidence in yourself is the biggest barrier _______ greater progress in your work.

A. Lacking of; to making　 B. Lack of; to make　　 C. Lack of; to making　 D. The lack of; to make

11.　 From the ________ shown in the dead body, he ________to death by a certain poisonous chemical, but I can’t tell exactly which.

A. symptoms; must have been poisoned　　 B. signs; should have been poisoned

C. symbols; could have been poisoned　　　 D. appearances; may have been poisoned

10.　 The housewife got her hands and arms _____ while trying to pour the boiling water from the kettle into the thermos; she ______ some healing ointment to her burn but the pain was still unbearable

　　 A. burned; put　　 B. burnt; used　　 C. burnt; dressed　 D. burnt; applied

9.　 In case of emergency, whether knowing how to apply first aid or not really ________ in matters concerning wounds like swollen wrists, broken arms, burns, cuts, and so on.

　　 A. makes difference　　 B. makes a difference　　 C. makes differences　 D. makes different

8.　 Water is vital _______every living thing ______, without which the world would be a dead place.

　　 A. to keeping; alive　　 B. to keep; living　 C. to keeping; lively　 D. to keep; alive

7.　 A cut in the tissue is easy to heal but a(an) _______ to the heart, if possible, takes a long time to do so.

　　 A. injury　　 B. damage　　 C. hurt　　 D. wound

6.　 It is several years since he ______ ill and his illness _______ great damage to his health.

　　 A. fell; has done　 B. fell; does　 C . was; had done　　 D. felt; has done

5.　 Medicine bottles should be clearly labeled and ______in places ______ are out of children’s reach.

　　 A. kept them; where　　 B. kept; which　 C. kept them; that　 D. kept; where

4.　 ______ there was no bandage available, she tore off her sleeve and tied it around his wrist a little above the bleeding point ______ him from losing too much blood.

　　 A. For; to save　　 B. Because; saving　　 C. Since; save　　 D. As; to save

3.　 The skin is the largest organ of your body ______of three layers; _______are essential to _____your body against diseases, poisons and the sun’s harmful rays or radiations.

　　 A. consisting; they; protecting　　　　　　　　　 B. consisting; which; protecting

　　 C. made up of; they; protect　　　　　　　　　　 D. consisted; they; protecting