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搜题
【判断题】
一般多产生于人体各关节处和胸部、腰部臀部。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】_____ can you get a better job in so competitive working places.
A.
Working hard
B.
Although you work hard
C.
Only by working hard
D.
As long as you work hard
【单选题】You have been working so hard------I think you _____ a holiday
A.
desert
B.
deserve
C.
devote
D.
define
【单选题】You have finished most of the work, so you ______ start working so early tomorrow. You ______ come at 9:00.
A.
can’t ; may
B.
mustn’t ; can
C.
needn’t ; may
D.
couldn’t ; can
【单选题】—Life now is not so easy as it _____ be , do you think so? —Yes. I _____ working seven days a week to get more pay. [ ]
A.
used to; used to C. used to; am used to
B.
was used to; used to D. was used to; am used to
【简答题】在等差数列{a n }中，a 1 +a 3 =8，且a 4 为a 2 和a 9 的等比中项，求数列{a n }的首项，公差及前n项和．
【简答题】在等差数列{a n }中，a 1 ＋a 3 ＝8，且a 4 为a 2 和a 9 的等比中项，求数列{a n }的首项、公差及前n项和．
【简答题】（12分）在等差数列{a n }中，a 1 +a 3 =8，且a 4 为a 2 和a 9 的等比中项，求数列{a n }的首项，公差及前n项和．
【单选题】下列关于混凝土保护层说法中，正确的是( )
A.
混凝土保护层最小厚度不应大于钢筋的直径
B.
混凝土保护层使纵向钢筋与混凝土有较好的粘结
C.
混凝土保护层能够保证混凝土开裂后钢筋不会锈蚀
D.
混凝土保护层是指从纵筋中心到截面边缘的距离
【单选题】— Life now is not so easy as it ___________be, do you think so? — Yes. I ___________ working seven days a week to get more pay.
A.
used to; used to
B.
was used to; used to
C.
used to; am used to
D.
was used to; am used to
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