instruction:
You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).
question:
Paragraph: Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.
 Question: You can find tables that show the pH value of different fruits and vegetables. The fruits such as apples are barely acidic so they have a pH value that is 
 Choices: A)higher 
B)lower
answer:
higher


question:
Paragraph: At higher elevations, there is less air to press on a given area.
 Question: When we get to the bottom of a mountain the air is 
 Choices: A)more dense 
B)less dense
answer:
more dense


question:
Paragraph: Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.
 Question: A pH value of 9 has a _____ acidity level than a pH value of 8. 
 Choices: A)lower 
B)higher
answer:

lower