在UML中,提供了两种物理表示图形:( )和( )。
A. 构件图
B. 对象图
C. 类图
D. 部署图
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Write a paragraph on the following topic. The topic has an outline you can follow.Topic: Teenager smoking请按照PPT里的提示进行写作
I like chocolate, _______ it is bad for my teeth.
A. and
B. but
C. for
D. so
It rained last night, _______the street was wet.
A. since
B. as
C. for
D. but
并列连词可以表达哪些关系?
A. 因果
B. 同等
C. 转折
D. 选择