10.
(A)warning
(B)warn
(C)warned
(D)warming 

6. (A)rose (B)raised (C)aroused (D)lifted

7. (A)and (B)but (C)also (D)and also

8. (A)from (B)form (C)become (D)perform

9. (A)research (B)search (C)searching (D)searched

1. According to the passage, Maass went to Cuba to _____.(A)do nursing work (B)do research on yellow fever (C)continue her education (D)teach people about sanitation

2. It can be inferred from the passage that the research was probably supported by the _____. (A)hospital (B)army (C)volunteers (D)researchers

3. According to the passage, Gorgas and Reed had previously looked for the cause of yellow fever by studying  _____.(A)sanitary conditions (B)mosquitoes (C)related diseases (D)victims of the disease

4. It can be inferred from the passage that many of the volunteers _____. (A)were not men (B)did not die (C)were not bitten by the insect (D)did not participate in the experiment

5. It can be inferred from the passage that, as a nurse, Maass was ______ (A)ambitious (B)dedicated (C)inexperienced (D)overworked

6. The ending end of education is to direct and help to fulfill a man's potentials in life. This means that _____.(A)education can do no more than directing and helping a man to realize his potentials. (B)the aim of education is not to direct but to help a man realize his potentials. (C)education has nothing to do with one's potentials. (D)the ultimate purpose of education is to direct and help a man to realize his potentials.