下列关于溶液的说法正确的是（ ）
A．一种溶液中只能有一种溶质
B．澄清透明的液体就是溶液
C．盐水凝固点比纯水高
D．溶液的各部分性质均相同激光
A、一种溶液中可以有多种溶质，如蔗糖溶液中可以溶解食盐；
B、澄清透明的液体不一定是溶液，如水是澄清透明的，但是纯净物，不是溶液；
C、盐水是溶液，其凝固点比纯水低；
D、溶液具有均一性、稳定性，溶液的各部分性质都相同．
故选D．
| 完形填空。 | ||||
| The year I went away to college was a very difficult transition (过渡期) for me. 1 is probably true with many people, I got quite homesick and 2 thought about going home. Although the 3 time for many students is getting 4 from home, my mailbox was frequently 5 . One day when I went to the mailbox, there was a postcard 6 at me. I sat down to read it, 7 a note from someone back home. 8 I became increasingly puzzled (困惑) as 9 postcards were like this. It was a full news report about a woman named Mabel and her new-bom baby. I took the card to my room and 10 about it. Several days later I 11 another postcard, and this one 12 news about Maybelline, Mabel's cousin. Soon after, another card arrived and then another, 13 full of news of different people. I began to 14 look forward to the next one, 15 to see what this author would come up with 16 . I was never 17 . Finally, the cards 18 coming, right about the time I had begun to feel 19 about college life. They had been such a happy distraction (调剂) that I have 20 all the postcards and still bring them out to read whenever I need a lift. | ||||
|