Logical Reasoning MCQ Set 19

The body of anyone infected by virus X will, after a week, produce antibodies to fight the virus; the antibodies will increase in number for the next year or so. There is now a test that reliably indigrees how many antibodies are present in a person's body. If positive, this test can be used during the first year of infection to estimate to within a month how long that person has had the virus.
Which one of the following conclusions is best supported by the statements above?

1. Antibodies increase in number only until they have defeated the virus.
2. Without the test for antibodies, there is no way of establishing whether a person has virus X.
3. Antibodies are produced only for viral infections that cannot be fought by any other body defenses.
4. If a person remains infected by virus X indefinitely, there is no limit to the number of antibodies that can be present in the person's body.
5. Anyone infected by virus X will for a time fail to exhibit infection if tested by the antibody test.

Ever since I arrived at the college last week, I've been shocked by the poor behavior of the students. The student population is completely lacking in proper social skills.
Which of the following, if true, would weaken the above conclusion?

1. Students who are away from their parents often exhibit rude behavior.
2. The college numbers over 50,000 students.
3. The narrator is a student and has interacted with many students.
4. Social skills should not be expected of college students.
5. The narrator was reluctant to stay at the college.

A study of a math program implemented in several pre-schools indigrees that children who received the specialized Math Plus math edugreion between the ages three and five had significantly higher math scores in 3rd and 4th grade than their classmates who did not receive this instruction. The proponents of the math argue that the introduction of this program for all children age three to five will significantly improve their chances for success in school.
Which of the following, if true, would most seriously weaken the above argument?

1. Most parents send their children to preschool for social development and do not have a clear idea about what types of edugreion they want for their children.
2. Cognitive abilities of 3- to 5-year-old children are constantly changing.
3. The children in the pre-schools that were studied had previously been exposed to another math enrichment program.
4. Children are not really interested in enrichment programs in preschool.
5. The cost factor needs to be specified and established before a large scale program can be undertaken.

The symptoms of mental disorders are behavioral, cognitive, or emotional problems. Some patients with mental disorders can be effectively treated with psychotherapy, but it is now known that in some patients' mental disorders result from chemical imbalances affecting the brain. Thus, these patients can be effectively treated only with medigreion that will reduce or correct the imbalance.
The argument depends on assuming which one of the following?

1. Treatment by psychotherapy can produce no effective reduction in or correction of chemical imbalances that cause mental disorders.
2. Treatment with medigreion always shows faster results for patients with mental disorders than does treatment with psychotherapy
3. Most mental disorders are not the result of chemical imbalances affecting the brain.
4. Medigreion is always more effective in treating patients with mental disorders than is psychotherapy.
5. Treatment with psychotherapy has no effect on mental disorders other than a reduction of the symptoms.

Dear Editor: I feel obliged to comment on the unfair review you published last week written by Robert Duxbury. Your readers should know that Mr. Duxbury recently published his own book that covered the same topic as my book, which you asked him to review. It is regrettable that Mr. Duxbury should feel the need to belittle a competing work in the hope of elevating his own book.
The author of the letter above makes her point by employing which method of argument?

1. Attacking the motives of the author of the unfavorable review.
2. Attacking the book on the same topic written by the author of the review.
3. Contrasting her own book with that written by the author of the review.
4. Questioning the judgment of the author of the unfavorable review.
5. Stating that her book should not have been reviewed by the author of a competing work.

The government of Zunimagua has refused to schedule free elections, release political prisoners, or restore freedom of speech; therefore, no more financial aid from the United States should be provided to Zunimagua.
Which of the following is an assumption made in the argument above?

1. Withdrawal of U.S. aid from Zunimagua will force a change in the policies of its government.
2. The people of Zunimagua would be better off if their present despotic government were overthrown.
3. The government of Zunimagua is dependent on continued U.S. aid for its existence.
4. U.S. aid should be given only to countries willing to adopt policies in line with U.S. interests and goals.
5. U.S. aid should be withdrawn from any country that refuses to operate its government along democratic lines.