若a∈(0,π2),且sin2α+cos2α=14,则tanα的值等于_____

题型:填空题

问题:

a∈(0,
π
2
),且sin2α+cos2α=
1
4
,则tanα的值等于______.
考点:同角三角函数的基本关系式
题型:填空题
Dear Jackie,
I am happy to get your letter. Do you want    about my schoollife this week? This week I   three English classes.Ilearn some new words. And we also   an interesting movie in the class. Its name is Home Alone. I like  very much. 1 1ike having PE     Mr White is my PE teacher. He is my favorite teacher. He is great     , and we all like to play    him. In  class, he teaches us to play basketball, soccer and ping-pong. This week, our class has a basketball game with Class 5 and we win(赢). I like playing     best and I want to be a great basketball player. What about you? Can you  me something interesting in your school?
Write to me soon.                                     Yours,
Emma
小题1:
A.to say B.leamC.to knowD.know
小题2:
A.haveB.hasC.leamD.learns
小题3:
A.lookB.look atC.seeD.sees
小题4:
A.himB.it'sC.themD.it
小题5:
A.becauseB.soC.ofD.but
小题6:
A.boringB.sadC.funD.cool
小题7:
A.withB.andC.ofD.for
小题8:
A.herB.heC.hisD.him
小题9:
A.soccerB.basketballC.ping-pongD.tennis
小题10:
A.tellB.speakC.callD.ask
题型:填空题

下图是我国华北某城市各功能区设置示意图,从环保角度考虑,其中合理的是

[ ]

A、A

B、B

C、C

D、D

题型:填空题

婴幼儿最常见的贫血是()

A.铅中毒性贫血

B.再生障碍性贫血

C.营养性混合型贫血

D.营养性缺铁性贫血

E.慢性溶血性贫血

题型:填空题

Our teacher told us to write a _____ composition.

A.two-thousand-word

B.two-thousand-words

C.two thousands words

D.two-thousands-word

题型:填空题

影响毒物对机体毒作用的因素中,不正确的是()。

A.毒物的化学结构

B.毒物的接触时间

C.毒物的联合作用

D.毒物的吸收途径

E.个体的易感性

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