You have left the light on Oh. soihave__and tum it off
A.I'll go
B. I have gone
C.i'm going to
D.I go
A.I'll go
B. I have gone
C.i'm going to
D.I go
第1题
who's that woman standing by our English teacher? It _be Jims mother, I'm not sure
A.can
B.should
C might
D.must
第2题
bike-sharing is convenient and idon ' t need to buy a bike for_
A.I
B.my
C. mine
D.myself
第3题
Why do many people buy things online on the 1lth of November every year? They think the things on sale are_
A. much cheaper
B. much lower
C. more expensive
D .much higher
第4题
_in his study,hedidn'tknow that all the others ha
A Burying
B Buried
C.Buried himself
D. He buried
第5题
Have you seen Mr Green? Yes, I saw him at the school gate. He_ with the headmaster.
A is talking
B.was talking
C. talked
D.has talked
第6题
-john is very If he promise to do something he'll do it.
A.independent
B.reliable
C.confident
D.flexible
第7题
My desk-mate has difficulty_ spelling some of the words in American English while, I have trouble_ intonation
A. with: with
B. in; with
C. in; in
D. with; in
第8题
?
A. He arrived there half an hour late
B. Tom is the most honest boy in his class
C. I really hope to
D. It is a great honor for me to be here
第9题
下列说法正确的是( )。
A. α射线与γ射线都是电磁波
B. β射线为原子的核心外电子电离后形成的电子流
C. 用加温、加压或改变其化学状态的方法都不能改变原子核衰变的半衰期
D. 原子核经过衰变生成新核,则新核的总质量等于原核的质量
第10题
带电粒子进入云室会使云室中的气体电离,从而显示其运动轨迹。图5是在有匀强磁场的云室中观察到的粒子的轨迹,a和b是轨迹上的两点,匀强磁场B垂直纸面向里。该粒子在运动时,其质量和电量不变,而动能逐渐减少。下列说法正确的是( )
A. 粒子先经过a点,再经过b点
B. 粒子先经过b点,再经过a点
C. 粒子不带电
D. 粒子带正电
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!