题目

某学校的周边有柑橘、水绵、葫芦藓、蕨和雪松等植物。科学兴趣小组的同学根据这些植物的特点，用下面的检索表进行分辨。其中③和④分别是上述六种植物中的和。 答案：【1】水绵【2】蕨—My grandmother died last month, I'm very sad about it.—_______. [     ]A. You are welcome B. That's all right C. I' m sorry to hear that D. I hope you'll feel better soon