第9题: [单项选择]According to the speaker, what do people often think about astronomers A. They spend most of their time looking through telescopes. B. They are constantly analyzing data. C. They often live near observatories. D. They devote a lot of time to theoretical problems. 参考答案:A 答案解析:[解析] Most people think of astronomers as people who spend their time in cold observatories peeri
第13题: [单项选择]Small as it is, the ant is as much a creature as ______ all other animals on earth. A. do B. have C. is D. are 参考答案:D 答案解析:本题为语法结构题。“as…as'’引导平行结构的句子，表示同级比较，且谓语要保持和其主语数的一致。本题大意为：尽管蚂蚁很小，它也和地球上的其他动物一样也是一种动物。
第25题: [单项选择]Wiesel法染嗜铬细胞的结果是（） A. 嗜铬细胞质红色，细胞核蓝色，其他无色 B. 嗜铬细胞质红色，细胞核黄绿色，其他蓝色 C. 嗜铬细胞质蓝色，细胞核红色，其他黄绿色 D. 嗜铬细胞质黄绿色，细胞核红色，其他蓝色 E. 嗜铬细胞质黄绿色，细胞核蓝色，其他无色 参考答案:E
