问题
选择题
| Daniel's family _____ their holiday in Huangshan this time next week. |
| A. are enjoying B. are to enjoy C. will enjoy D. will be enjoying |
答案
答案：D
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| Daniel's family _____ their holiday in Huangshan this time next week. |
| A. are enjoying B. are to enjoy C. will enjoy D. will be enjoying |
答案：D
下表所示为某健康人肾动脉中的血浆、肾小囊中的液体和尿液中P、Q两种物质的浓度（单位：克/100毫升），P、Q各是什么物质（ ）
| 血 浆 中 | 肾 小 囊 中 | 尿 液 中 | |
| P | 0.03 | 0.03 | 1.80 |
| Q | 0.10 | 0.10 | 0.00 |
A．P是葡萄糖，Q是蛋白质
B．P是葡萄糖，Q是尿素
C．P是尿素，Q是葡萄糖
D．P是尿素，Q是蛋白质