一根头发如何手呢 a ( ) of hair.还是直接 a hair 呢

一根头发如何手呢 a ( ) of hair.还是直接 a hair 呢 一根头发可不可以说”a hair a lot of hair 可以这样说吗?形容头发多,可以说成 a lot of hair 还有,如果说头发少,又该怎么说呢? 一个塑料带装着水(塑料袋重量忽略)系着一根头发,将其托着放入水中,拉着头发,放开手,问头发受力吗? 一根头发有多重 一根头发的直径 wake up call中文歌词Spoken:Just givin' you a wake up call ha ha ha ha ha ha ha ha I'm giving you a wake up call Wake up' wake up Just to say that I love you And that I'm thinking of you Lettin' you know that you got friends I'm giving you a wake 如何测量一根头发的直径?用一把最小刻度是MM的尺测量 如何测量一根头发的直径?（答案不要太深奥）初一 已知三种酸的酸性HA大于HB大于HC,那么A离子,B离子,C离子三种离子的活泼性如何判断呢? 一根头发直径约为? 歇后语：一根头发系磨石------------ 拉断一根头发需多少力A.2N B.20N C.0.2N 英文翻译.他的身上有一根头发/有好多头发 网友说下面一句话是个笑话,谁帮我翻译一下Today is barack Obama's birthday, ha ha, bad luck is dead. He was a downstairs a basin of water of others hit on the brain. Home unexpectedly and beauty together brush arm, ha, ha, ha. Take a 如何读出这句话的感情i have a wonderful ieda!Ha-ha!如何读出那种有点奸诈有点高兴的感情 One of the advantages of living on the top floor of a hA.sight B.sens C.view D.look 如何画眉?咖啡色头发 应该什么颜色的眉毛呢?如何画眉呢?我的眉毛比较粗 能画吗.