问题
单项选择题
JPEG2000的目标是（）。
A.高压缩、高比特速率
B.高压缩、低比特速率
C.低压缩、高比特速率
D.低压缩、低比特速率
答案
参考答案：B
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JPEG2000的目标是（）。
A.高压缩、高比特速率
B.高压缩、低比特速率
C.低压缩、高比特速率
D.低压缩、低比特速率
参考答案：B
| 阅读下面短文。根据短文内容从每题所给的四个选项中选择最佳选项。 |
| Do you want to save money when you travel by train? Here are some ways. Day Returns This kind of ticket can save you 45% on the fare (money for tickets). You have to travel before 8:00 a. m. and after 6:00 p. m. from Monday to Friday, but you can travel at any time on Saturday or Sunday. Big City Savers (savers 优惠票) You can save much money with these tickets on some trains. You have to buy them at the latest by 16:00 the day before you travel. Weekend Returns You can use Weekend Returns for most journeys over 60 miles. Go on Friday, Saturday or Sunday, and return the same weekend on Saturday, and you can save 35% on the fare. Monthly Returns You can use these tickets for most journeys over 65 miles. Go any day and return within a month. Monthly Returns can save you 25% on the fare. Family Returns You can get a card of Family Returns for ￡20 and then when you buy tickets later, you need to pay only ￡3 for each of the other family members (4 at mot). You can travel as often as you like within two months. |
| 1. Which kind of ticket are you going to choose if you want to go to a small town 75 miles away for four days? |
[ ] |
| A. Big City Savers. B. Monthly returns. C. Weekend Returns. D. Family Returns. |
| 2. If a man buys himself a ticket of ￡15 and three tickets for his family with a card of Family Returns, how much will he pay? |
[ ] |
| A. ￡47. B. ￡27. C. ￡24. D. ￡15. |
| 3. Which of the following is true? |
[ ] |
| A. A card of Family Returns can only be used for two months. B. If you want to travel to London by air, you can use Big City Savers. C. If you leave this Friday and return next Saturday, you can use Weekend Returns. D. You can use Day Returns at any time on weekdays. |
| 4. The passage is probably taken from a __________. |
[ ] |
| A. dictionary B. textbook C. newspaper D. storybook |
