问题
单项选择题
3G网络的ECNO低于（）db认为质量存在问题。
A.-2
B.-5
C.-8
D.-10
答案
参考答案：D
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3G网络的ECNO低于（）db认为质量存在问题。
A.-2
B.-5
C.-8
D.-10
参考答案：D
| 阅读理解。 |
| Look at the clothes line in the twins' bedroom. There are some clothes on it. You can see a green blouse and a yellow skirt. The trousers on the clothes line are black. They are not new but clean. Are they Lily's clothes? No. I know they are Lucy's. Lily's clothes are on a clothes tree near the window. Her trousers are brown, her blouse is white and her skirt is blue. There is a new hat on the clothes tree, but it's not Lily's, it's Lucy's. There is an old hat on Lucy's bed in the room, it's Lily's. There are no clothes on the other bed, the bed is Lily's. |
| 1. What can you see in the bedroom? I can see ______. |
[ ] |
| A. a clothes line B. a tree C. a bed |
| 2. What colour are Lucy's trousers? They are ______. |
[ ] |
| A. green B. black C. brown |
| 3. Where is Lucy's hat? It's on ______. |
[ ] |
| A. the clothes tree B. the clothes line C. Lily's bed |
| 4. How many beds are there in the room? ______. |
[ ] |
| A. only one B. three C. two |
| 5. Are there any things on Lily's bed? ______. |
[ ] |
| A. Yes, there is a hat on it B. No, there is not anything on it C. Sorry, I don't know |