66. Doctors are wondering about the seeming rise of the number of ____.

1. adults with a malady
2. children with kidney stones
3. cheeseburgers, fires and other salty foods
4. excruciating pains

67. It has been said about kids' kidney stones that ____.

1. there is a tendency of rising number of kids with kidney stones
2. they have been the talk of a recent pediatric kidney conference
3. there has been no substantial evidence about the rising number
4. all the above

68. Kidney stones can cause ____.

1. excess calcium in the urine
2. malnutrition
3. incredible pains
4. appendicitis

69. It can be inferred from the passage that ____.

1. the number of affected kids used to be small
2. kids do not need treatment when they have kidney stones
3. the preferred treatment for kidney stones in kids is exclusively observation
4. too much calcium in the urine causes metabolic problems

70. Which of the following can be the best title for the passage?

1. Kidney stones are definitely adult thing
2. Children who are treated for kidney stones
3. Doctors say kidney stones in kids are on the rise
4. Salt is not something that we really thought about

(Reference keys.)