A number of the students ( ) boys. The number of the students ( ) 40. A.are B.is答案是什么 请告诉我句子的意思和涉及的知识 告诉我为什么选这个答案 谢谢啦

英语翻译What is the maximum number of wire terminals that may be stacked on a single stud in a terminal strip? the number of,a small number of,a number of. a number of the number of the number of、a number of、large number的区别 a number of the students a number of students还是a number of the students A great number of 与 The number of 的区别 the number of和a number of的区别 a number of 与the number of用法 区别 比较 the number of,a number of 的区别及用法 a number of和the number of的区别 用“the number of”和“a number of”一起造句 a number of和the number of的区别 the number of 和 a number of 的区别 the number of与a number of的区别 a number of,the number of的用法 a number of 和the number of 的区别 the number of 与 a number of都是什么意思