下列哪个是早上好的表达?() A: Boa tarde B: Boa noite C: Bom dia

Read the following sentence: It was a picture of a boa constrictor in the act of swallowing an animal. In this sentence, how many articles are there?

Read the following sentence: It was a picture of a boa constrictor in the act of swallowing an animal. In this sentence, which word is a gerund?

【单选题】下面程序执行结果() #include main() { int i ,j ; for(i=1; i<=5; i++) { for(j=1; j<=i; j++) printf("%2d",i); printf(" ",); } } A. 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5 B. 1 2 3 4 5 C. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D. 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

下列缩写分别是主配线架分配线架是（）。 A: AMDF B: BOA C: CIDF D: DPM

Huawei, a Chinese firm, received 5 million US dollars from its sales in the US and deposited them into BoA (a US bank). A: China's nancial account gets a positive entry of 5 million. B: China's nancial account gets a negative entry of 5 million. C: China's nancial account does not change. D: It is not clear how the nancial account of China would change.

Read the following sentence: It was a picture of a boa constrictor in the act of swallowing an animal.<br/>In this sentence above, which word is a gerund? A: was B: act C: swallowing

设X-N（5,4）,则P（2（） A: φ（5）- φ（1） B: φ（1）- φ（5） C: φ（-1）- φ（-5） D: φ（-5）- φ（-1）

一个待排序的数据元素序列为{5, 4, 3, 2, 1}，采用基本插入排序对其进行排序，以下（ ）是插入排序每一趟的结果。 A: 4 5 3 2 1 3 4 5 2 1 2 3 4 5 1 1 2 3 4 5 B: 5 4 3 1 2 5 4 1 2 3 5 1 2 3 4 1 2 3 4 5 C: 4 3 2 1 5 3 2 1 5 4 2 1 5 4 3 1 5 4 3 2 D: 4 5 3 2 1 2 3 4 5 1 3 4 5 2 1 1 2 3 4 5

设ξ1，…，ξ100是取自正态母体ξ~N（1，4）的样本，若已知（a>0），则（）。 A: a=-5，b=5 B: a=5，b=-5 C: a=1/5，b=-1/5 D: a=-1/5，b=1/5