转基因超级鼠的获得证明了( ) A.生物的性状是由生殖细胞控制的 B.生物的性状

题型:选择题

问题:

转基因超级鼠的获得证明了(  )

A.生物的性状是由生殖细胞控制的

B.生物的性状是由受精卵控制的

C.生物的性状是由染色体控制的

D.生物的性状是由基因控制的

考点:基因控制生物的性状转基因
题型:选择题

生成各种血细胞的原始细胞是造血祖细胞。

题型:选择题

肌紧张是()

A.翻正反射

B.防御反射

C.牵张反射

D.状态反射

E.对侧伸肌反射

题型:选择题
Valentine’s Day may come from the ancient Roman feast of Lupercalia.   36  the fierce wolves roamed nearby, the old Romans called   37  the god Lupercus to help them. A festival in his   38  was held on February 15th. On the eve of the festival the   39  of the girls were written on   40  of paper and placed in jars. Each young man   41  a slip. The girl whose name was   42  was to be his sweetheart for the year.
Legend   43  it that the holiday became Valentine’s Day   44  a Roman bishop named Valentine. Emperor Claudius II   45  the Roman soldiers NOT to marry or become engaged. Claudius felt married soldiers would   46  stay home than fight. When Valentine   47  the Emperor and secretly married the young couples, he was put to death on February 14th, the   48  of Lupercalia. After his death, Valentine became a   49 . Christian bishop moved the holiday from the 15th to the 14th—Valentine’s Day. Now the holiday honors Valentine   50  of Lupercus.
Valentine’s Day has become a major   51  of love and romance in the modern world. The ancient god Cupid and his   52  into a lover’s heart may still be used to   53  falling in love or being in love. But we also use cards and gifts, such as flowers or jewelry, to do this.   54  to give flower to a wife or sweetheart on Valentine’s Day can sometimes be as   55  as forgetting a birthday or a wedding anniversary.
小题1:
A.WhileB.WhenC.ThoughD.Unless
小题2:
A.uponB.backC.offD.away
小题3:
A.honorB.beliefC.handD.way
小题4:
A.problems B.secretsC.names D.intentions
小题5:
A.rolls B.pilesC.works D.slips
小题6:
A.castB.caught C.drewD.found
小题7:
A.givenB.chosenC.electedD.delivered
小题8:
A.tellsB.meansC.makesD.has
小题9:
A.afterB.sinceC.asD.from
小题10:
A.orderedB.appealedC.imaginedD.believed
小题11:
A.otherB.simplyC.ratherD.all
小题12:
A.dislikedB.resistedC.defeatedD.dishonored
小题13:
A.celebrationB.arrangementC.feastD.eve
小题14:
A.goat B.saintC.modelD.weapon
小题15:
A.becauseB.madeC.insteadD.learnt
小题16:
A.partB.representative C.judgmentD.symbol
小题17:
A.storyB.wanderC.arrowD.play
小题18:
A.describeB.requireC.demandD.alarm
小题19:
A.KeepingB.DisapprovingC.SupportingD.Forgetting
小题20:
A.constructive B.damaging C.strengtheningD.responding
题型:选择题

心包积液时可出现()

A.水冲脉

B.交替脉

C.重搏脉

D.奇脉

E.迟脉

题型:选择题

以下的五个事件,每个事件是以简短词语表述的,在下列四种假定发生顺序的四个数字序列,选择其中最为合乎逻辑的一种事件顺序。()

(1)推广可重复使用的竹筷

(2)推广使用一次性木筷

(3)对生产木筷作出限制

(4)生产木筷出口创汇

(5)森林资源日趋萎缩

A.1―2―4―3―5

B.2―4―5―3―1

C.1―2―3―4―5

D.2―4―3―5―1

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