在直角△ABC中,∠C=90°,AD平分∠BAC交BC于点D,若CD=8,则点D到斜边AB的距离等于______.
∵点D到斜边AB的距离等于CD
∴D到斜边AB的距离为8.
故填8.
阅读短文。
Kate and Susan are in London on Sunday. They fly from Ottawa and arrive at 7 pm in the evening. They
take a taxi from the airport to their hotel in London. The next morning, Kate goes to the movie theatre to watch
a movie. Susan visits the British Museum. In the afternoon they go to the store to buy many clothes. In the
evening they have a supper in a grand hotel. Their plane will leave at 11pm. Though they are very tired, they are
happy, too.
1. Kate and Susan are .[ ]
A. Canada
B. Canadians
C. British
2. Kate and Susan go to the by taxi.[ ]
A. hotel
B. restaurant
C. airport
3. The plane fly away at .[ ]
A. 7 pm
B. 11 pm
C. morning
4. Where is the British Museum? In .[ ]
A. the U.S
B. Canada
C. the U.K
5. They stay in London for days.[ ]
A. 2
B. 3
C. 4
血涂片上,红细胞中心淡染区消失、整个细胞染成深红色、直径大于10μm,此细胞是()
A.正色素性红细胞
B.巨红细胞
C.多色素性红细胞
D.高色素性红细胞
E.低色素性红细胞