【单选题】【消耗次数:1】
_________hand in his exercise-book before Monday?
Need he to
Does he need
Needs he to
Need he
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相关题目
【单选题】 19. _______hand in his exercise book before Monday.
①  Need he to
②  Does he need
③  Needs he to
④  Need he
【单选题】 It was not until he arrived in class _____ realized he had forgotten his book.
①  when he
②  that he
③  and he
④  he
【单选题】 That day he ___________ his clothes before he came to see me.
①  has washed
②  washed
③  had been washing
④  was washed
【单选题】 That day he ___ his clothes before he came to see me.
①  has washed
②  washed
③  had been washing
④  was washed
【单选题】 He is writing his stories ___________ Monday___________Friday.
①  both...and
②  either...or
③  from...to
④  between...and
【单选题】 That day he_______his clothes before he came to see me.
①  has washed
②  washed
③  had been washing
④  was washed
【单选题】 He wrote the book in ____ with his wife.
①  proportion
②  installment
③  correspondence
④  collaboration
【单选题】 He never does his homework [填空] others.
①  so careful as
②  as carefully as
③  carefully as
④  as careful as
【单选题】 He said that his sister ?[填空]been there one week before
①  had
②  has
③  have
④  will have
【单选题】 He cannot ____ a car, for he does not earn much money.
①  obtain
②  afford
③  donate
④  consume
随机题目
【单选题】 求完全二部图K2,4的点独立数b0 =
①  1;
②  2;
③  3;
④  4。
【单选题】 对于完全图 Kn,下面哪个不是哈密顿图:
①  1阶完全图 K1;
②  2阶完全图 K2;
③  3阶完全图 K3;
④  4阶完全图 K4。
【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 G 设 n 阶 m 条边的无向连通图,则以下哪个性质不对:
①  m 3 n - 1;
②  m 3 n ;
③  m=n;
④  m 3 n + 1。
【单选题】 在完全二部图 Kr, s 中, 2 £ r £ s,则以下哪个性质不对:
①  至多有 max{r, s}个顶点彼此不相邻;
②  点连通度k=min{r, s};
③  至多有 min{r, s}条边彼此不相邻;
④  边连通度l=max{r, s}。
【单选题】 设 T 为非平凡树, 最大度? (T) 3 k, 则 T 至少有多少片树叶:
①  k-1;
②  k;
③  k+1;
④  2k。
【单选题】 对于7阶完全图 K7,下面哪个说法是正确的:
①  既不是欧拉图也不是哈密顿图;
②  是欧拉图非哈密顿图;
③  是哈密顿图非欧拉图;
④  既是欧拉图又是哈密顿图。
【单选题】 判断下面哪个不是欧拉图:
①  2阶有向完全图;
②  3阶完全图 K3;
③  4阶完全图 K4;
④  5阶完全图 K5。
【单选题】 G 设无向简单图, 最小度d (G)32, 恰有两个奇度顶点,则以下哪个性质不对:
①  存在长度大于或等于d (G)+1 的圈;
②  这两个奇度顶点必然连通;
③  至少有两个顶点不是割点;
④  这两个奇度顶点之间可以不用连通。
【单选题】 对于8阶完全图 K8,下面哪个说法是正确的:
①  既不是欧拉图也不是哈密顿图;
②  是欧拉图非哈密顿图;
③  是哈密顿图非欧拉图;
④  既是欧拉图又是哈密顿图。