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: More pollutants mean poorer air quality.
 Question: When a river gets emptied of a lot of waste chemicals it becomes 
 Choices: A)cleaner 
B)dirtier
answer:
cleaner


question:
Paragraph: Bigger atoms have more electrons.
 Question: Mona is comparing the size of two atoms in her science lab. If she notices that one atom is larger then the other, what does that tell her about the number of electrons it has? 
 Choices: A)more 
B)less
answer:
more


question:
Paragraph: When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.
 Question: Jon was jogging, and slowing down his pace. His heart is beating _____. 
 Choices: A)more 
B)less
answer:

less