有“世界屋脊”之称的高原是[ ]
A．蒙古高原
B．青藏高原
C．伊朗高原
D．德干高原
答案：B
Don't worry. I can _____________ your baby.[ ]
A. look at
B. look after
C. look like
D. have a look
白肋叶烟包内自然碎片不应大于（）%
A、1
B、2
C、3
D、4
