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【简答题】
从A港出发顺流匀速驶向B港，行至某处，发现船上一救生圈不知何时落入水中，立刻原路返回，找到救生圈后，继续顺流驶向B港。从B港出发逆流匀速驶向A港。已知救生圈漂流的速度和水流速度相同；甲、在静水中的速度相同。甲、到A港的距离y 1 、y 2 （km）与行驶时间x（h）之间的函数图象如图所示。 （1）写出在逆流中行驶的速度； （2）求在逆流中行驶的路程； （3）求到A港的距离y1与行驶时间x之间的函数关系式； （4）求救生圈落入水中时，到A港的距离。 【参考公式：船顺流航行的速度船在静水中航行的速度+水流速度，船逆流航行的速度船在静水中航行的速度水流速度。】
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【单选题】All these new students will be divided ________ 12 classes. Then these classes will be divided ________ the teachers.
A.
to; in
B.
among; into
C.
into; by
D.
into; among
【简答题】A.
d i sh B. b i ll C. f i sh D. l i eA. d i sh B. b i ll C. f i sh D. l i e
【单选题】You can _____cake _____ten pieces. [ ]
A.
divide, into
B.
be divided ,into
C.
divided, into
D.
be divide, into
【单选题】England is the largest of the four countries and _____ it is divided roughly into three zones. [ ]
A.
in convenience
B.
with convenience
C.
for convenience
D.
at convenience
【单选题】The teacher ______ the class ______ small groups. [ ]
A.
divide…into…
B.
divided…into…
C.
divided…to…
D.
divide…to…
【简答题】A．Divided into 12- month cycles. B．Divided into 6- month cycles. C．Divided into 10 - year cycles. D．Divided into 12 - year cycles.
【单选题】You can the cake ten pieces.
A.
divided, into
B.
be divided, into
C.
divide, into
D.
be divide, into
【简答题】The government is hopelessly divided and is unlikely to ________ the next election. A. overcome B. overtake C. survive D. surpass
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