高级西餐厅主要提供()。
A、早餐
B、午餐
C、晚餐
D、外卖
参考答案:B, C
如图所示,一细光束射到平面镜MM'的O点处,请根据光的反射规律画出它的反射光线,标明反射角大小。
Look out! The traffic is moving fast. It's ________ dangerous ________ cross the street.
A.very, to
B.so, to
C.much, to
D.too, to