当挖土深度超过地下水位线0.5m左右时，有流砂现象的地区，就会发生流砂。( )
参考答案：对
. Television has many advantages. It keeps us _____ about the _____ news and also provides entertainment in the house.
A．informed; latest
B．to know; later
C．learning; latter
D．to think; latest
If your friend tells a lie to you, you should .[ ]
A. tell a lie, too
B. talk with him and find out the reason
C. hit him on the head with a stone
