把一个长方体木块截成两个完全一样的正方体,两个正方体棱长之和比原来长方体棱长之和增加40分米,求原来长方体的长是多少分米。
40÷8×2=10(分米)
阅读下面短文,用括号内所给动词的适当形式填空,必要时可加助动词或情态动词。
My friend,Lucy,comes from Canada.She 1 (come)to China two years ago.She wants 2 (1earn)Chinese.Now she has finished 3 (study)all her lessons in our schoo1.She 4 (1eave)for home next week.We 5 (plan)a party for her at the moment.We hope she will have a good journey back home.
答案: 1. _________ 2. _________ 3. _________ 4. _________ 5. _________
对关键字序列(56,23,78,92,88,67,19,34)进行增量为3的一趟希尔排序的结果为 (28) 。
A.(19,23,56,34,78,67,88,92)B.(23,56,78,66,88,92,19,34)C.(19,23,34,56,67,78,88,92)D.(19,23,67,56,34,78,92,88)