土的抗剪强度的测定方法有哪些？
参考答案：
（1）直接剪切试验
（2）三轴压缩试验
（3）十字板剪切试验
（4）无侧限抗压强度试验
已知集合M={x|y=2x}，N={x|y=lg（2x-x2）}，则M∩N=（ ）
A．（0，+∞）
B．（0，2）
C．（2，+∞）
D．（-∞，0）∪（2，+∞）
The following charts show the different usages (用途) of pocket money（压岁钱） in Class 4, Grade 3. Read carefully and answer the questions below.
小题1: How many students are there in Class 4, Grade 3 ?
小题1:
A．12
B．24
C．50
D．53小题2:Their pocket money is mostly spending in _________.
小题2:
A．Playing computer games
B．Eating snacks
C．Seeing films
D．Buying presents小题3:There are ________ fewer students playing computer games than eating snacks.
小题3:
A．4
B．2
C．12
D．8
