问题
单项选择题
光通量的单位对应表示符号是（）。
A.1m
B.cd
C.1x
D.nt
答案
参考答案：A
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光通量的单位对应表示符号是（）。
A.1m
B.cd
C.1x
D.nt
参考答案：A
| 阅读理解。 |
| On National Day, we had a long holiday. We had seven days. I went to Hainan with my parents. My grandparents lived in a beautiful village in Hainan. We visited them. We went to see the blue sea every day. We swam in it. We went fishing. My grandma cooked good food for us every day. The seafood is tasty. I like it. We took many pictures. I was excited. |
| 1. I went to Hainan with my __. |
| A. father and mother B. grandparents C. parent |
| 2. There are _ days on National Day. |
| A. a week B. seven C. five |
| 3. I was __ on National Day. |
| A. very happy B. tired C. bored |
| 4. I can in Hainan. |
| A. went fishing B. swim and go fishing C. went swimming |
| 5. We ate good food . |
| A. last weekend B. every day C. on National Day |