【简答题】【消耗次数：1】
Translate the sentence by using “subject clause”or“find oneself+prep./V-ing/V-ed”.3. At dusk they _______________ a valley (发现他们来到)
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相关题目
【简答题】
Translate the sentence by using “subject clause”or“find oneself+prep./V-ing/V-ed”.4. I _____________ everything she said. (我同意)
【简答题】
Translate the sentence by using “subject clause”or“find oneself+prep./V-ing/V-ed”.1. ___________________ is a good-sized canvas bag. (你需要的)
【简答题】
Directions: Translate sentence by using “nothing more than”.3. For the moment, all these ___________(只不过是建议而已).
【单选题】
设有向图D1 = áV3, E3?, 其中 V3 = {v1, v2, v3, v4, v5}, E3 = {áv1, v2?, áv2, v3?, áv3, v2?, áv4, v5?, áv5, v1?}，则v2的闭邻域 N(v2)为：
①
{v1, v2, v3}；
②
{v1, v3}；
③
{v1, v2, v3, v4, v5}；
④
{v2}。
【单选题】
设有向图D = áV, E?, 其中 V={v1, v2, v3, v4, v5}, E={áv4, v1?, áv1, v1?,áv1, v2?,áv1, v3?, áv3, v1?, áv5, v3?}，则v1的邻域 N(v1) =
①
{v3, v4}；
②
{v2, v3,v4}；
③
{v1, v2, v3, v4}；
④
{v2,v3}。
【单选题】
设有向图D = áV, E?, 其中 V={v1, v2, v3, v4, v5}, E={áv4, v1?, áv1, v1?,áv1, v2?,áv1, v3?, áv3, v1?, áv5, v3?}，则v1的闭邻域 N(v1) =
①
{v3, v4}；
②
{v2, v3,v4}；
③
{v1, v2, v3, v4}；
④
{v2,v3}。
【单选题】
已知有向图G=(V,E)，其中V={V1,V2,V3,V4,V5,V6,V7}，E={V1,V2V1,V3V1,V4V2,V5V3,V5V3,V6V4,V6V5,V7V6,V7}，G的拓扑序列是（ ）。
①
V1,V3,V4,V6,V2,V5,V7
②
V1,V3,V2,V6,V4,V5,V7
③
V1,V3,V4,V5,V2,V6,V7
④
V1,V2,V5,V3,V4,V6,V7
【单选题】
设有向图D = áV, E?, 其中 V={v1, v2, v3, v4, v5}, E={áv4, v1?, áv1, v1?,áv1, v2?,áv1, v3?, áv3, v1?, áv5, v3?}，则v1的先驱元集G -(v1) =
①
{v3, v4}；
②
{v1, v3,v4}；
③
{v1, v2, v3, v4}；
④
{v2,v3}。
【单选题】
设有向图D = áV, E?, 其中 V={v1, v2, v3, v4, v5}, E={áv4, v1?, áv1, v1?,áv1, v2?,áv1, v3?, áv3, v1?, áv5, v3?}，则v1的后继元集G +(v1) =
①
{v3, v4}；
②
{v1, v3,v4}；
③
{v1, v2, v3, v4}；
④
{v2,v3}。
【单选题】
设无向图G1 = áV1, E1?, 其中, V1 = {v1, v2, v3, v4, v5}, E1 = {(v1, v2), (v2, v3), (v3, v4), (v3, v3), (v4, v5)}，则v2的邻域 N(v2)为：
①
{v1, v2, v3}；
②
{v1, v3}；
③
{v1, v2, v3, v4, v5}；
④
{v2}。
随机题目
【单选题】
the excellent service, guests can enjoy delicious food in our restaurant.
①
In place of
②
in addition to
③
In charge of
④
In case of
【单选题】
Let’s get through the work quickly.----seems to be little time left now.
①
It
②
There
③
That
④
We
【单选题】
David, there-------a dictionary and some books on your desk. Please put them away.
①
is
②
are
③
have
④
has
【单选题】
Her wish was that he __________ at Beijing University at once.
①
studies
②
studied
③
study
④
will study
【单选题】
This is a river closely ___________ to the lives of the people of the city.
①
joined
②
exposed
③
affected
④
related
【单选题】
JTL Company will ________ our business of bicycle sales in the country.
①
set out
②
put up
③
call for
④
take over
【单选题】
Five minutes earlier, __________ we could have caught the last train.
①
and
②
or
③
so
④
but
【单选题】
, the sales manager began his report with the statistics of last month’s sales.
①
By now
②
As usual
③
So far
④
At most
【单选题】
Can I help you with your suitcase?
①
I have no idea
②
No, no. I can carry it myself
③
That’s a good idea
④
Thank you. I can manage myself