班级人际关系形成和发展的手段是( )。
A.交往
B.学习
C.课堂
D.课外活动
参考答案:A
解析: 交往是班级人际关系形成和发展的手段。
下列哪种情况不会引起肠系膜上动脉与腹主动脉所呈夹角增大
A.慢性淋巴结炎
B.淋巴结转移癌
C.恶性淋巴瘤
D.胰头钩突部肿瘤
E.胰尾部肿瘤
It was now clear that no such weapons were manufactured and none been found.
A.was found
B.were founded
C.has been found
D.have been founded