試題詳解

38. It can be inferred from the passage that gypsy moth caterpillars become immune to the wilt disease as a result of _______.
(A) consuming a wide range of nutrients from a variety of leaf types
(B) feeding on leaves that contain high levels of phenols
(C) growing population density, which outstrips the ability of the virus to multiply and spread
(D) ingesting the virus together with leaves that do not contain tannin