近年来中枢神经兴奋剂的滥用呈上升趋势。（）
参考答案：对
The traditional linguists gave priority to （） and took words as the starting point.
A． spoken form
B ．listening ability
C．written form
D．reading comprehension ability
不锈钢设备要防止液体停滞是为了防止（）
A.电偶腐蚀
B.点蚀
C.缝隙腐蚀
D.应力腐蚀开裂
