Jim is ill. Let’s go and see him after school,______?
A. shall we
B. can we
C. do we
D. have we
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Recently, everything’s getting much more expensive,_______?
A. doesn't everything?
B. doesn’t it
C. isn’t everything
D. isn’t it
Linda’s just come back from America,_______?
A. hasn't she
B. has she
C. didn't she
D. did she
--___________will they finish building the house?--In two weeks.
A. How many times
B. How far
C. How soon
D. How often
偏心拉伸实质上是()的组合变形。
A. 两个平面弯曲
B. 轴向拉伸与弯曲
C. 轴向拉伸与剪切
D. 平面弯曲与扭转