A、Topic sentences
B、Concluding sentences
C、Focus sentences
D、Supporting sentences
A、Topic sentences
B、Concluding sentences
C、Focus sentences
D、Supporting sentences
A、extra
B、long
C、essential
D、beautiful
A、Tempering
B、Spheroidizing
C、Case hardening
D、Annealing
已知动点的运动方程为=2t,=t2-t,则其轨迹方程为()。
A. ['=t2-t
B.=2t
C.2-2-4=0
D.2+2+4=0
A、below the title
B、C and D
C、bottom of a front page
D、the end of the paper
A、Well, sometimes it is hard for me to get to work on time.
B、I really enjoy helping my co-workers with their projects, so I try to be careful not to take too many extra duties.
C、Well, I don’t like work overtime.
D、It is hard for me to get up too early.
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