问题 选择题
下列因式分解中,结果正确的是(  )
A.2m2n-8n3=2n(m2-4n2B.x2-4=(x+2)(x-2)
C.x2-x+
1
4
=x2(1-
1
x
+
1
4x2
D.9a2-9b2=(3a+3b)(3a-3b)
答案

A、应为2m2n-8n3=2n(m2-4n2)=2n(m+2n)(m-2n),故本选项错误;

B、x2-4=(x+2)(x-2),正确;

C、应为x2-x+

1
4
=(x-
1
2
2,故本选项错误;

D、应为9a2-9b2=9(a2-b2)=9(a+b)(a-b)故本选项错误.

故选B.

完形填空
I ran into a stranger as he passed by. "I'm so  36 !" was my reply. Then he said, "Excuse me too. I wasn't even   37 you" .We were very polite, this stranger and I.
  38  at home, a different story is told---how we  39 our loved ones. While I was cooking ,my daughter came up to me quietly. When I   40 , I nearly knocked her down. "Get out of the way! "I barked She ran away, with her little heart broken. I didn't realize how  41 I'd spoken.
That night, as I lay  42 in bed, God's quiet voice spoke to me and said,  "While  43 with a stranger, you're calm and polite, but with those you love, you're quick to  44 . Go and look right now on the kitchen floor. You'll   45 some flowers there by the door. Those are the flowers she brought for you. She   46 them herself. She stood there _ 47 , not to spoil your surprise, and you never saw the tears in her eyes."   48 this time, I felt sad and my own tears had begun to   49 . "Are these the flowers you picked for me?" I asked. She   50, "I found them out by the tree. 1 knew you'd like them." I said, "I'm so sorry that I   51  them today. And I shouldn't have shouted at you that way." She whispered, “Mommy, that's okay... I still love you   52 .” I hugged her.
Are you aware that if you die tomorrow, the company that you are working for could easily  53  you in a matter of days? But the family you leave behind will feel the   54 for the rest of their lives. And come to think of it, we  55 more into our work than into our families –an unbalanced investment (投资) indeed.
小题1:A. angry
小题2:A. noticing
小题3:A. And
小题4:A. respect
小题5:A. cooked
小题6:A. aloud
小题7:A. asleep
小题8:A. dealing
小题9:A. quarrel
小题10:A. find
小题11:A. made
小题12:A. quickly
小题13:A. In
小题14:A. come
小题15:A. added
小题16:A. missed
小题17:A. forever
小题18:A. fire
小题19:A. loss
小题20:A. pass
B. sorry
B. knowing
B. So
B. regard
B. turned
B. clearly
B. still
B. meeting
B. excite
B. take
B. bought
B. eagerly
B. By
B. form
B. cried
B. lost
B. anyway
B. pay
B. trouble
B. lead 
C. sad
C. following
C. As
C. treat
C. began
C. difficultly
C. awake
C. talking
C. shout
C. enjoy
C. prepared
C. quietly
C. For
C. fall
C. smiled
C. destroyed
C. however
C. remember
C. problem
C. run
D. unlucky
D. understanding
D. But
D. show
D. worked
D. cruelly
D. upset
D. traveling
D. mistake
D. need
D. picked
D. nervously
D. After
D. flow
D. agreed
D. forgot
D. therefore
D. replace
D. care
D. pour
                   
单项选择题