问题 填空题
单项式-
πx
3
5系数是______,次数是______.
答案

根据单项式定义得,单项式-

πx2
的系数是-
π
,次数是2.

故答案是:-

π
,2.

探究题
完形填空

第二节:完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

I’ve loved my mother’s desk since I was just tall enough to see above the top of it as mother sat doing letters. Standing by her chair, looking at the ink bottle, pen, and white paper, I decided that the act of ___21___ must be the most ___22___ thing in the world.

Years later, during her final illness, mother ___23__ different things for my sister and brother. “But the ___24___”, she said, “is for Elizabeth”.

I never saw her angry, and never saw her cry. I knew she ___25___ me, she showed it in action. But ___26___ a young girl, I wanted heart-to-heart talks ___27___ mother and daughter. They never happened. And a gulf(深渊) opened between us. I was “too emotional”. ___28___ she lived “on the surface”.

As years passed and I graduated from college, I loved my mother and I wrote to her in ___29__ words and asked her to let me know in any way she chose that she did ___30___ me.

I posted the letter and waited for her answer. ___31___ came. My hope turned to ___32___, then little interest, finally, peace --- it seemed that nothing happened. I couldn’t be sure that the ___33___ had even got to Mother. I only knew that I had written it, and I could ___34___ trying to make her into someone she was not.

Now the ___35___ of her desk told me, as she’d ___36___ been able to, that she was ___37___ that writing was my chosen work. I ___38___ the desk carefully and found some papers ___39___---- a photo of my father and a one-page letter, folded and refolded many times.

“Give me an answer”, my letter asks, “in any way you chose”. Mother, you always chose the ___40___ that speaks louder than words.

21. A.Speaking         B.writing                   C.looking                  D.listening

22. A.Wonderful       B.tiring                     C.funny                    D. Productive

23. A. bought               B. gave                        C. designed                  D. kept

24. A. pen                    B. paper                       C. chair                       D. desk

25. A. loved                 B. disliked                   C. appreciated              D. sympathized

26. A. like                   B. as                        C. be                        D. unlike

27. A. with                  B. among                     C. beside                     D. between

28. A. So                     B. And                         C. But                     D. Or

29. A. careful               B. active                      C. thankful                  D. serious

30. A. ignore                B. accept                      C. forgive                    D. dislike

31. A. No one              B. None                    C. Something               D. Neither

32. A. surprise           B. joy                       C. disappointment         D. happiness

33. A. ides                   B. information              C. news                       D. letter

34. A. stand                 B. stop                         C. continue                D. practice

35. A. present               B. appearance               C. shape                      D. sight

36. A. always               B. ever                        C. never                      D. often

37. A. sorry                 B. encouraged              C. regretful                  D. pleased

38. A. moved               B. cleaned                 C. fixed                       D. emptied

39. A. inside                B. outside                    C. below                      D. above

40. A. gesture               B. method                    C. action                   D. way