题目

情景交际：选择最佳选项填空。 36. —Can I help you? —___________. A. No, I can’t B. Yes, I can C. You’re very kind D. No, thanks 37. —Can I borrow your bike? —____________. A. OK. This is my bike B. My bike is over there C. Certainly. Here you are D. Yes, you can 38. —What’s the weather like today? —____________. A. The air is clean and nice B. It’s cloudy B. I like the weather today D. It’s good weather 39. —Who is speaking? —____________. A. I’m Kate B. That’s Kate C. Speaking D. This is Kate 40. —Would you mind if I smoke here? —__如图P1、P2为半透膜制成的结构，且在如图的小室内可自由滑动。A室内溶液浓度为2mol/L，B室内溶液浓度为1.5mol/L，C室内溶液浓度为1.5mol/L，实验开始后，P1、P2分别如何移动（  ） A．P1向右、P2不动 B．P1向左、P2向左 C．P1向右、P2向右 D．P1向左、P2不动