问题
单项选择题
下列说法中错误的一种说法是( )
A．只要总产量减少，边际产量一定是负数
B．只要边际产量减少，总产量一定也减少
C．随着某种生产要素投入量的增加，边际产量和平均产量增加到一定程度将趋于下降，其中边际产量的下降一定先于平均产量
D．边际产量曲线一定在平均产量曲线的最高点与之相交
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
下列说法中错误的一种说法是( )
A．只要总产量减少，边际产量一定是负数
B．只要边际产量减少，总产量一定也减少
C．随着某种生产要素投入量的增加，边际产量和平均产量增加到一定程度将趋于下降，其中边际产量的下降一定先于平均产量
D．边际产量曲线一定在平均产量曲线的最高点与之相交
参考答案：B
| 完形填空。 | |||
| Chen Yue gets __1__ at 6:00 every weekday. She eats __2__ at 6:15.Then she __3__ English. At 6:50, she leaves home. She __4__ a bus to school. She gets there __5__ 7:10. She doesn't want to be __6__ . Classes begin at 8:00. Chen Yue has lunch at her uncle's __7__ at around 12:00. In the __8__ , classes are over at 4:00, then she __9__ games. She gets home at 5:00. In the evening she does her homework. And sometimes she __10__ TV. She goes to bed at 10:00. | |||
| ( ) 1. A.up ( ) 2. A.dinner ( ) 3. A.reads ( ) 4. A.gets ( ) 5. A.in ( ) 6. A.late ( ) 7. A.family ( ) 8. A.day ( ) 9. A.likes ( ) 10. A.sees | B. down B. lunch B. sees B. has B. at B. early B. bedroom B. noon B. gets B. watches | C. off C. breakfast C. likes C. takes C. of C. slow (慢的) C. classroom C. afternoon C. plays C. reads | D. to D. supper D. does D. goes D. on D. quickly (快的) D. house D. morning D. works D. looks |