His attitude toward us seems()
A.nicely
B.warmly
C.kindly
D.friendly
参考答案:D
Social networking is an important factor _______ business success.
A.devoting to
B.appealing to
C.attaching to
D.leading to
软件危机出现于20世纪60年代末,为了解决软件危机,人们提出用 【1】 的原理来设计软件,这就是软件工程诞生的基础。