已知集合A={x|lg|x|=0},B={x|0<2x+1<4},则A∩B=______.
A={-1,1},B={x|x<1},易知A∩B={-1},故答案为 {-1}
The Americans had to put off the space shuttle.[ ]
A. launch
B. to launch
C. launching
D. launched
A.密度
B.比热
C.熔点
D.热值