问题
单项选择题
在临界温度及临界压力下，气态与液态已无明显差别；（）临界压力时，温度降至临界温度以下就全部变为液体。
A.小于
B.大于
C.相等
D.不确定
答案
参考答案：B
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在临界温度及临界压力下，气态与液态已无明显差别；（）临界压力时，温度降至临界温度以下就全部变为液体。
A.小于
B.大于
C.相等
D.不确定
参考答案：B
| 根据短文内容，用方框中所给单词的适当形式填空，使短文内容完整，语句通顺。 | |
there 2______ my parents when I was eight years old. I lived and studied there for one year, and I had some happy memories. One of the most interesting things of that city was that 3______ were many dogs. Perhaps Russians 4______ dogs very much. You can see dogs here and there. Almost each of the families had a dog. I made friends with many Russian children 5______ I was living and studying there. They were all very nice. They had fair hair and fair skin. I played with them 6______ though I could only speak a little Russian at first. They were 7______ to me. The weather in Moscow was very cold. It snowed almost every day in winter. The ground was always 8______ with a lot of snow. We often made 9______ together. Now I am back in 10______, but I miss them so much. I think I will never forget my happy memories of this visit to Moscow. |