白血病视网膜出血可表现为()
A.视网膜深层点状出血
B.Roth斑
C.视网膜前出血
D.视网膜棉绒斑
E.视网膜浅层火焰状出血
参考答案:A, B, C, D, E
We should study the new traffic rules and 1earn how___________ ourselves.
A.protect
B.to protect
C.protecting
D.protected
金银花是指()
A.花色由白变黄
B.花色由黄变白
C.不同变型的花具不同颜色
D.花色随环境条件而异