An ichthyologist is a scientist who studies fish. Most people who do this job say they love their work because it is very rewarding and varied. They work not only inside a laboratory, but also out in the field. Fieldwork includes traveling to rivers, oceans and lakes in order to collect information and specimens（样本）, Reading, writing and speaking are also very important to the job. Fish scientists need to read the research of other scientists. They must he able to write up their own research clearly so that others can follow it. They also need to be able to give lectures about their findings, so that they can spread knowledge. Ichthyologists who wish to specialize can choose any one of three areas of study. The first area is aquaculture  (水产养殖). This involves the study and practice of fish farming and management. Because it is a rather new study, there are very few job opportunities available. However, as there is so much to discover, many see it as an exciting area for a new ichthyologist to enter. The second area is fisheries science, which means working with a team of scientists to find out more about different fish species. The third area is about the protection of natural fish populations. This is very important today, given that many fish species are in danger of dying out because of the actions of humans. To become a successful fish scientist, you need to have a curious mind and be able to work on your own. You also need to be able to handle equipment and perform experiments; but most importantly, you must love fish. To become an ichthyologist, you will need to train at a university to pass a Bachelor of Science degree. For this, you will need to be good at mathematics, physical science and biology. Then, you will need to study for another year to complete an honours degree in ichthyology. This honours degree contains coursework about all aspects of fish. You also need to complete a research paper. 68. What makes the jobs of ichthyologists so varied? A. They study fish habits and collect information. B. They have to study science and mathematics. C. They work in fields as well as in laboratories. D. They read research papers written by others. 69. Which of the following statements is NOT true according to the passage? A. An ichthyologist has an interesting and varied profession. B. Aquaculture is the study of fish protection. C. The life of an ichthyologist can involve lots of travel. D. A fish scientist needs to be independent and curious about things. 70. Who is most likely to become an ichthyologist? A. Tom, because he likes fishing and outdoor sports. B. Jack, because he likes to travel and read adventure books. C. Jenny, because she likes science, mathematics and reading about dinosaurs. D. Jane, because she likes mathematics, science, biology and searching rock-pools. 71. The passage is probably written for         . A. university students                        B. science researchers C. fisheries experts                          D. fish farmers