A={x∈2|2≤22-x<8},B={x∈R||x -1|>1},则A∩ (CRB)中的元素个数为[ ]
A.0
B.1
C.2
D.3
答案:C
Never lose much time _______ you should make use.
A.that
B.which
C.of which
D.of that
对中国农业生产影响最大、最常见且分布范围最广的一种自然灾害是( )
A.洪涝
B.干旱
C.寒潮
D.台风