问题
单项选择题
通常增溶剂加入的正确方法是
A.把增溶剂先溶于水再加入药物
B.药物溶于水再力口增溶剂
C.增溶剂与药物混匀以后加水稀释
D.增溶剂、药物、水同时混合
E.任意加入
答案
参考答案:C
解析:通常增溶剂加入的正确方法是增溶剂与药物混匀以后加水稀释,选C。
通常增溶剂加入的正确方法是
A.把增溶剂先溶于水再加入药物
B.药物溶于水再力口增溶剂
C.增溶剂与药物混匀以后加水稀释
D.增溶剂、药物、水同时混合
E.任意加入
参考答案:C
解析:通常增溶剂加入的正确方法是增溶剂与药物混匀以后加水稀释,选C。
“Get up, get up, Jim. It’s time to get up!” mother said while she was 1 me. I opened my eyes and looked at the clock. “Oh, dear! It’s a quarter to eight already. I’ll be late for school again,” I thought. I 2 out of the bed, washed my face, and then hurried to the bus stop without breakfast. As soon as I 3 the bus, it started running. “I’m sure I can get to school in time,” I said to myself. Suddenly the bus stopped. The bus driver got off the bus, then got on the bus again and said, “I’m sorry, ladies and gentlemen. There’s 4 wrong with the bus. Please get off the bus and wait for another one. ” “I couldn’t wait. The school is not 5 . I’d better run to school,” I thought, and then I began to run. But before I got to school, it began to 6 heavily. When I 7 the classroom, I was wet shivering (发抖) with cold. The physics teacher had already begun his lesson. It was Mr Smith. He was about fifty years old. All the students were a little afraid of him and—so was I. I liked neither him nor his physics lessons. I hesitated (犹豫) for a moment, and then I opened the door. “I’m very sorry, Mr Smith. I'm late again,” I said with a red face. “It’s you again, Jim,” Mr Smith said 8 , “I’ve told you not to be late, but you... ” He suddenly stopped and looked at my wet clothes. He turned to 9 and said, “I’m very sorry, my boys and girls,” With these words he quickly took off his own jacket and handed it to me. “Now, take off your wet coat and put this one on, or you'll catch cold. ” he said kindly. I went to my seat with Mr Smith’s jacket on. It was a bit larger for me but I felt very 10 in it. I found, for the first time, physics was so interesting and how well I could understand it!
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