木薯原产于哪里?我国引进木薯种植已有多少年的历史?

题型:问答题 简答题

问题:

木薯原产于哪里?我国引进木薯种植已有多少年的历史?

考点:粮食知识竞赛粮食起源文化粮食起源文化题库
题型:问答题 简答题

羊膜腔穿刺流产风险为()

A.0.5%

B.1%

C.2%

D.4%

E.5%

题型:问答题 简答题
阅读下面短文,从短文后所给各题的四个选项(A、B、C、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。
There was a very special teacher who made a far –reaching difference in my life
Fall ,1959,the first day of class at Bethesda Chevy Chase High School was about begin .“Who”,I asked a senior , “is Mrs McNamara,my 10th grade English teacher?”He just _31  and said something about my being in __32__Soon ,I understood what he meant. Mrs. McNamara had a pattern of ___33___that she repeated again and again. We would have a literature reading task for_34__. The next day ,when we came to class, there would be two or three topics on the blackboard ____35____ to the homework reading. We were_____36__to write an in –class essay about one of the topics. The following day ,she would ___37__thd corrected and graded essays and each person would be called ___38__ to stand in front of the class and to _____39____ his\her essay. The class were required to criticize(评论)that essay, ___40__the grade of everyone in class would be reduced
The first time that I_41__her read–write–criticize method, I had not ___42to do the homework and had written something without knowing what it meant. _____43___the extreme embarrassment I suffered, standing before my classmates, _____44____myself. No one laughed at me, no one would be ___45_____enough ,or foolish enough, to do that in Mrs. McNamara’s class. The embarrassment came from ___46_____and along with it came a strong ____47____not to let it happen again
Mrs. McNamara kept all of our written work in files, it was easy to see the ____48____in writing that had occurred. What was not so easy to see was the inner transformation that had taken place, at least for me. What Mrs. McNamar______49_____me to do was to see myself as others see me and, having done that, I could improve myself. And I _____50__. Thank you, Mrs. McNamara.
小题1:
A.noddedB.laughedC.apologizedD.shouted
小题2:
A.troubleB.sorrowC.dangerD.anger
小题3:
A.behaviorB.evaluationC.activityD.thought
小题4:
A.reviewB.performanceC.practiceD.homework
小题5:
A.addedB.relatedC.contributedD.advised
小题6:
A.expectedB.persuadedC.allowedD.advised
小题7:
A.collectB.returnC.sendD.receive
小题8:
A.on purposeB.at firstC.by chanceD.in turn
小题9:
A.talk throughB.hand overC.read outD.show off
小题10:
A.soB.andC.butD.or
小题11:
A.triedB.adoptedC.examinedD.experienced
小题12:
A.undertakenB.attemptedC.examinedD.experienced
小题13:
A.rememberB.attemptedC.botheredD.hesitated
小题14:
A.playing jokes onB.making a fool of
C.trying a trap for ofD.taking advantage
小题15:
A.braveB.carelessC.proudD.selfish
小题16:
A.aboveB.withinC.behindD.below
小题17:
A.tendencyB.preferenceC.determinationD.sense
小题18:
A.improvementsB.painsC.difficultiesD.advantages
小题19:
A.trustedB.invitedC.forcedD.permitted
小题20:
A.didB.couldC.hadD.would
题型:问答题 简答题

激素的半衰期用来表示

A.激素作用的速度

B.激素作用持续的时间

C.激素更新的速度

D.激素释放的速度

E.激素和受体结合的速度

题型:问答题 简答题

正确排列下面各生理过程的顺序:

A.精子上行到输卵管      

B.精子经过 * *        

C.发育成熟,分娩  

D.进行细胞分裂,产生两个、四个…细胞           

E.形成一个小胚泡  

F.细胞分裂和分化形成胚胎  

G.植入子宫内膜  

H.精子通过子宫  

I.形成受精卵  

J.初具人形,成为胎儿

______、______、______、______、______、______、______、______、______和______.

题型:问答题 简答题

真正的创新素质是学习与创造的有机统一。

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