班组长应具备的素质有：思想素质，安全素质和（）。
A.管理素质
B.文化素质
C.专业素质
D.身体素质
参考答案：A, B, C, D
The new stadium being built for the next Asian Games will be________the present one.[ ]
A. as three times big as
B. three times as big as
C. as big as three times
D. as big three times as
下图是甲、乙两物质的溶解度曲线图，下列说法正确的是
A、t1℃时，甲、乙两物质的溶解度相等
B、温度对甲、乙两物质的溶解度影响相同
C、把t1℃时甲、乙两饱和溶液升温至t2℃时，两溶液仍都为饱和溶液
D、把t2℃时甲、乙两饱和溶液降温至t1℃时，两溶液都析出溶质
