A. to readB. readC. readingD. readsWould you please ___……

单项选择题Cornwall Research Facility in Salem primarily focuses on lung cancer research ______ treatment.

单项选择题—What's in the ______ —There are some ______ and ______ in them.

单项选择题Alexis ______ her Canadian dollars for RMB before her trip to Beijing.

单项选择题课堂教学中，经常出现教师在学生不注意参与学习时突然加重语气或提高声调的现象，教师采用这种手段的目的是为了引起学生的( )。

单项选择题人际关系有不同的需求，在权力上与别人建立并维持良好关系的欲望属于( )。