—Your bike was broken. Were you late for class this morning, Linda?
—No. Luckily, Mr. Green passed by and .
A:waited for me
B:let me down
C:kicked me off
D:gave me a lift
当飞机降落时,乘务员要求旅客咀嚼食物,其目的是使耳中的____ 张开,使鼓膜内外的____ 保持平衡,从而防止对耳的损伤.
图是常用指甲刀的实物及结构示意图,下列说法中不正确的是()