Check if a String Is a Number Using theDoubleClass in Java We can use theparseDouble()method of Double class that converts a string to double and returns a double type value. It throws an exception if it cannot be parsed. publicclassSimpleTesting{publicstaticvoidmain(String[]args){String ...
The program creates a variable called “x” and assigns it an integer value, namely the number 5. Then the program creates a variable called “y” and assigns it a string value, namely the string “5”. Of course, these two variables are not the same. As a result the rest of the ...
Erhu, a type of Chinese string instrument, is an important and popular musical instrument in China.One of the most unique 【小题1】 (quality)of Erhu is that it only has two strings. But even with only a very 【小题2】 (limit)number of strings, professional Erhu players can convey a ...
a number of是“许多”的意思,放在复数之前所以后面用arethe number of是“……的数量”的意思,所以后面用is 分析总结。 anumberof是许多的意思放在复数之前所以后面用arethenumberof是结果一 题目 a number of前加be动词(are还是is)?the number of后加be动词(are还是is) 答案 a number of是“许多”的意思,...
该短语后面接are。a number of是一个短语，表示“许多”或“大量”，后面通常接复数名词。这个短语中的“number”是一个名词，表示数量，而“of”是一个介词，用于表示所属关系或范围。a number of后面接的是复数名词，所以应该用“are”。例如：“A number of students are absent today（许多学生...
是的 the number of xx的主语是number. number是单数，所以跟is a number of xxx的主语是xxx，因为a number of xxx是表示许多，所以xxx是复数，跟are the
the number of表示“……的数量”,中心词为number,指的是of后边名词的数量,数量是个抽象概念,因此谓语动词用is。 a number of用法 1.A number of students of our school have read that magazine. 我们学校有很多学生都看过那本杂志。 2.A number of wild animals have been found in the forest. 森林里...
A. looking for; with B. looking; from C. looking for; and 相关知识点: 试题来源: 解析 A 考查动词短语和介词辨析。句意:Tom 正和 Helen 在书上找一个数字。 look 看;look for 寻找。with 和……一起;and 和,连接两个并列成分;根据题干可知前后两个成分并非是并列关系,故不能选 and。 根...
解析 用are A number of 相当于many,后面用are.the number of 是……的数目,后面用is.例如The number of the students in our class is 46.结果一 题目 A number of them后面跟is还是are? 答案 用are A number of 相当于many,后面用are.the number of 是……的数目,后面用is.例如The number of the...
跟上面情况类似的还有"a number/group of XX"这样的用法。 "a number of XX"后面的谓语动词大部分情况下都用复数,比如:A number of people are concerned about the lack of progress. 需要注意的一点是,"the number of XX"后面的谓语动词要用单数,比如:The number of skilled workers is increasing. 对于a...