6只猫6分钟捉6只老鼠，请问100分内捉100只老鼠要多少只猫？

搜题请搜索小程序“爱下问搜题”

问题解答题

答案

由题意可知，

1只猫6分钟能捉1只老鼠，

100÷（100÷6）

=100÷

100

，

=6（只）．

所以100分钟里捉100只老鼠需要6只猫．

答：需要6只猫．

听力题

66. France, England and Belgium are all ________ (欧洲) countries.

67. Nobody can have his determination ________(动摇)once he makes up his mind.

68. The match beside the cupboard is easy to ________ (划燃).

69. The trip promised to be long but ________ (惊险).

70. When I heard of his great achievements, I wished to say ________ (祝贺)to him at once.

71. He carried out many experiments but none ________ (成功).

72. ________ (权衡) advantages and disadvantages, he made the final decision.

73. We agree without much further ________ (争论).

74. You will be better accepted if you can speak more ________(自然地) in public.

75. The tractor was loaded with a lot of live ________ (鹅) and chickens.

单项选择题

无意注意是（）。

A、一种事先有预定的目的，但不需要意志努力的注意

B、一种事先没有预定的目的,也不需要意志努力的注意

C、一种事先没有预定的目的,但需要意志努力的注意

D、只需有预定目的的注意