皮皮学，免费搜题
登录
搜题
【单选题】
主动脉缩窄最常发生在哪个部位：()。A.
主动脉起始部
B.
升主动脉
C.
腹主动脉
D.
主动脉峡部
E.
主动脉弓
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】John ______stop his car in time, so he hit the girl.
A.
could
B.
can
C.
can’t
D.
couldn’t
【单选题】John hadn’t been able to stop smoking suddenly;he had to control his smoking desire ________.
A.
by and by
B.
sooner or later
C.
little by little
D.
from time to time
【单选题】—Is John coming by train? —He should, but he ______not. He likes driving his car.
A.
must
B.
can
C.
need
D.
may
【简答题】二轴晶光性符号的确定是根据:当( )正光性,当( )负光性; 具有两个光轴的晶体属于( )、( )、( )晶系; 在宝石的肉眼鉴定中,通常将宝石的透明度大致划分为:_____、_____、_____、_____、_____五个级别。 光泽越强的宝石色散越强; 色散强的宝石,其双折射率一定也高;
【简答题】John ( ) stop his car in time, so he hit the girl.
【单选题】Why did George stop his car?
A.
The traffic light was red.
B.
Something went wrong with his car.
C.
He wanted to speak to the boy and his girlfriend.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
