问题
单项选择题
若一段小路把K和N连接起来,则下面甲两个农舍必须得被一条小路连接起来
A.J,K
B.K,O
C.L,O
D.M,N
答案
参考答案:C
解析:当K和N连接时已经有3条小路,M和O还都是孤立的,所以下面要连的两条路一定得涉及M和O,根据题中条件可知另两小路肯定是在J和M之间及L和O之间,因为每个农舍最多只能和其他的两个农舍相连,A项、B项、D项都排除。
若一段小路把K和N连接起来,则下面甲两个农舍必须得被一条小路连接起来
A.J,K
B.K,O
C.L,O
D.M,N
参考答案:C
解析:当K和N连接时已经有3条小路,M和O还都是孤立的,所以下面要连的两条路一定得涉及M和O,根据题中条件可知另两小路肯定是在J和M之间及L和O之间,因为每个农舍最多只能和其他的两个农舍相连,A项、B项、D项都排除。
完形填空: | |||
Look! Nice flowers! So nice flowers! They are Miss Gao's 1 .He is 2 and he is sixty-six.He likes 3 very much.He has 4 flowers.They have different(不同的). 5 Look! Red, green, blue and purple. Oh!These are black and 6 are green. I 7 know black flowers and green flowers.Miss Gao likes flowers, too. She waters(浇水) 8 every morning.They often (经常)let their friends 9 some flowers. Miss Gao is ou English teacher.Let's go and ask them for 10 flowers. | |||
( )1.A. father ( )2.A. young ( )3.A. flowers ( )4.A. much ( )5.A. colour ( )6.A. they ( )7.A. doesn't ( )8.A. it ( )9.A. have ( )10.A. no | B. mother's B. new B. flower B. many B. the colour B. the B. don't B. they B. has B. much | C. father's C. tall C. colour C. these C. a colour C. it C. not C. them C. look C. any | D. mother D. old D. trees D. those D. colours D. those D. no D. flower D. to see D. some |