34. What is the passage mainly about? (A) The importance of fish to human beings. (B) A comparison of fish to warm- blooded animals. (C) How water has shaped the development of fish. (D) The difference between saltwater and freshwater environment.

43. The author implies that there is cause for concern if consumers with limited incomes buy organic foods instead of conventionally grown foods because__________ . (A) too many farmers will stop using conventional methods to grow food crops (B) conventionally grown foods are more readily available than organic foods (C) many organic foods are actually less nutritious than similar conventionally grown foods (D) organic foods can be more expensive but are often no better than conventionally grown foods

34. What is the passage mainly about?
(A) The importance of fish to human beings.
(B) A comparison of fish to warm- blooded animals.
(C) How water has shaped the development of fish.
(D) The difference between saltwater and freshwater environment.

相關試題

相關試卷

34. What is the passage mainly about?(A) The importance of fish to human beings.(B) A comparison of fish to warm- blooded animals.(C) How water has shaped the development of fish.(D) The difference between saltwater and freshwater environment.

相關試題

相關試卷

34. What is the passage mainly about?
(A) The importance of fish to human beings.
(B) A comparison of fish to warm- blooded animals.
(C) How water has shaped the development of fish.
(D) The difference between saltwater and freshwater environment.