该公司向灾区捐赠的10万元能否从应税所得中扣除( )。 A．不能扣除 B．可以扣除

人类感染血吸虫病的途径是（）

A.母婴垂直感染

B.消化道感染

C.呼吸道感染

D.皮肤黏膜感染

E.输血感染

找出划线部分错误的一项，并且在题后横线上改正。

(  ) 1. Although it was raining, but the game went on.________

                       A       B           C                     D

(  )2. He’s borrowed the book since two weeks ago, hasn’t he?________

                       A                        B             C                D

(  )3. There are much more roads, buildings and people in this area.________

              A          B                                               C           D

(  )4. Do you know when Tom married to her?________

                                 A                B      C D

(  )5. He says he has just now finished doing his homework.___________

                A                  B                     C             D

财政部和教育部为稳定学校食堂饭菜价格而给予补贴，较低的饭菜价格吸引了一些社会人员和教职工纷纷去食堂买饭，导致供不应求，某学校设置规定，对外来人员购买主食进行限购，对此，你怎么看

内螺纹成型工艺中共分几级变形？