问题
填空题
已知a+b=3，则a2-b2+6b的值是（ ）。
答案
9
搜题请搜索小程序“爱下问搜题”
已知a+b=3，则a2-b2+6b的值是（ ）。
9
| 完形填空。 | |||
| The X-ray (射线) photograph is very helpful to doctors. If you break your arm __1__ leg, the doctor __2__ you to a hospital to have an X-ray photograph __3__ to find out __4__ where the break is and what kind of break is. If a small child swallows (吞下) a coin (硬币) or __5__ other hard thing, __6__ sometimes happens, the doctor will take an X-ray department (部门), __7__ doctor now depends __8__ these photographs to find out if there is __9__ wrong with the teeth,for example, __10__ can't be seen from the outside. | |||
| ( ) 1. A. nor ( ) 2. A. takes ( ) 3. A. taking ( ) 4. A. just ( ) 5. A. any ( ) 6. A. for ( ) 7. A. but ( ) 8. A. to ( ) 9. A. anything ( ) 10. A. where | B. between B. brings B. take B. it B. some B. as B. yet B. for B. some B. which | C. or C. makes C. taken C. but C. no C. before C. or C. in C. nothing C. if | D. with D. asks D. took D. in D. another D. after D. and D. on D. any D. as |