题目内容
（请给出正确答案）
The price elasticity of demand curve faced by a competitive firm is ______.
A．0.
B．-1.
C．-∞.
D．1.
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更多“The price elasticity of demand curve faced by a competitive firm is ______.A．0.B．-1.C．-∞.D”相关的问题
A、lifelong
B、formal
C、distance
| 阅读理解 |
| When the lazy days of summer arrive and the schedule is packed with swimming, camp, and family vacations, it can be a challenge to find time for learning.But kids' reading skills don't have to grow cold once school's out.Here are some ways to make reading a natural part of their summer fun: Explore your library.Visit your local library to check out books and magazines that your kids haven't seen before.Many libraries have summer reading programs, book clubs, and reading contests for even the youngest borrowers.With a new library card, a child will feel extra grownup checking out books. Read on the road.Going on a long car trip？Make sure the back seat is stocked with favorite reads. When you're not at the wheel, read the books aloud.Get some audiobooks (many libraries have large selections) and listen to them together during driving time. Make your own books.Pick one of your family's favorite parts of summer-whether it's baseball, ice cream, or the pool-and have your child draw pictures of it or cut out pictures from magazines.Stick the pictures onto paper to make a booklet and write text for it.When you're done, read the book together. Reread it whenever you like! Keep in touch.Kids don't have to go away to write about summer vacation.Even if your family stays home, they can send postcards to tell friends and relatives about their adventures.Ask a relative to be your child's pen pal and encourage them to write each week. Keep up the reading habits.Even if everything else changes during the summer, keep up the reading routines around your house.Read with your kids every day-whether it's just before bedtime or under a shady tree on a lazy afternoon.And don't forget to take a book to the beach!Just_brush_the_sand_off_ the_pages-it's_no_sweat! 1. The purpose of the passage is to________. A. encourage parents to read B. give advice on raising kids C. raise a good summer reader D. suggest places for vacations 2. If you drive on a long trip in summer, you can________. A. visit the local library and join book clubs B. borrow some audiobooks to listen to C. keep in touch with friends by sending postcards D. read your own picture books with your son 3. By saying "Just brush the sand off the pages-it's no sweat", the author means________. A. taking away the sand on the book is very difficult B. a special book is needed when you're reading on the beach C. one can remove the sand on the book with a brush easily D. there's no trouble reading even on the beach 4. Who are the intended readers of the passage？ A. Parents. B. Students. C. Teachers. D. Editors. |
A、flair
B、flame
C、flare
D、flash
B、错。信号带宽和信道相干带宽的比较用于区分频率选择性衰落和平坦衰落
C、错。
D、对
A、it will sell more output.
B、it will sell the same amount of output as before.
C、it will not be able to sell any output.
D、it will sell some output, but not as much as before.
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