单选题
While the disease is in state it is almost impossible to determine its existence by
【正确答案】
E
【答案解析】A disease in a latent state has yet to manifest itself and emerge into view. Therefore it is impossible to observe. Remember, in double-blank sentences, go through the answers, testing the first word in each choice and eliminating those that don't fit. When a disease is in a critical or acute state, its existence is obvious. Therefore, you can eliminate Choices B and C.
单选题
Virginia Woolf conventional notions of truth: in her words, one cannot receive from any lecture "a nugget of pure truth" to wrap up between the pages of one's notebook and keep on the mantelpiece forever.
【正确答案】
D
【答案解析】The second clause presents an example of literary mocker?'. The abstract idea of preserving a nugget of pure truth is appealing; the concrete example of setting it up on the mantel makes fun of the whole idea.