第4题: [单项选择]It was said that not until the old man had passed away ______ to his relatives. A. she let out the secret B. was the secret let out C. out she let the secret D. out let the secret 参考答案:B 答案解析:[考点] 倒装句
[解析] not until放在句首引导句子时,句于应该用倒装。A、C、D三项语序都不对,故选B。
第5题: [单项选择]下面哪项不是细胞膜的功能()。 A. 输入营养物质和排出代谢废物 B. 将细胞质与外界环境分隔开 C. 使细胞保持相对稳定的内环境 D. 在信息传递过程中起作用 E. 构成细胞器的界膜 参考答案:E