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【单选题】
下述哪一项不是活塞式发动机点火系统的功用?A.
点火系统按规定的发动机气缸工作顺序工作
B.
活塞在压缩行程位于上死点前预先确定的角度上点火
C.
发动机起动起来后，点火系统立即停止工作
D.
保证定时准确，火花能量足够
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【简答题】A．militarily B．theoretically C．physically D．mentally
【单选题】---____ you _____ our new music teacher? -- - No.But Jack said she _______ the music room.You can find her there.
A.
Have seen; had gone to
B.
Had; seen; had gone to
C.
Did; see; has been to
D.
Had; seen; Had been to
【单选题】— Miss Wang, I feel very nervous with the competition approaching. — ________. As long as you can finish it，it is a victory. [ ]
A.
Take your time
B.
Take it easy
C.
No problem
D.
It's hard to say
【单选题】Children who are described as mildly mentally mentally handicapped are often upset to hear themselves described as such, and such terms as 'children with learning difficulties' are now ______.
A.
at large
B.
by use
C.
in vogue
D.
for change
【简答题】“Mentally flexible” indicates the fact
【单选题】If you _______ your homework, you can go out to play football. [ ]
A.
finish
B.
will finish
C.
are finishing
【单选题】----- Can I go back home now? ----- You______ to leave until you ______ your work.
A.
won’t allow; finish
B.
won’t be allowed; will finish
C.
won’t be allowed; have finished
D.
won’t allow; will finish
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