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【简答题】
vi. (fml.) (~ to) do sth. extreme or unpleasant in order to solve a problem 采取,诉诸(不好的事物) n. [C] a place where a lot of people go for holidays 度假胜地
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【简答题】看图填空,一空一词。 1. What can you see in the picture? We can see that a school ______ ______ a skating Marathon. 2. How many people are there in the picture? And who are they? There are seven. Five are stude...
【简答题】如图,在△ABC中,AD⊥BC于D,AB=AC,过点B作射线BP交AD、AC分别于E、F,与过C点平行于AB的直线交于点P。 (1)求证:EB 2 =EF·EP; (2)若过B点的射线交AD、AC的延长线分别于E、F,与过C点平行于AB的直线交于P点,则结论(1)是否仍然成立?如果成立,请给出证明。
【单选题】What traditional performances can people see at the temple fair?
A.
singing and dancing
B.
circus
C.
performances representing palace events
【简答题】已知:⊙O中,OB、OC是半径,DF⊥OC于F,AE⊥OB于E,若AB=CD,求证:AE=DF.
【单选题】What's the best place to test the aroma of a particular perfume?
A.
Wrist
B.
Behind the ear
C.
Neck
【多选题】What is aroma in Chinese culinary arts?
A.
the smell of the dish
B.
the freshness of the materials
C.
the blending of seasoning
【单选题】已知定义的DataFrame如下:【图片】df['city']的结果是?
A.
0 北京 1 上海 2 广州 3 北京 Name:city,dtype:object
B.
北京 上海 广州 北京
C.
北京
D.
以上都不对
【简答题】如图,△ABC内接于⊙O, AD是⊙O直径, E是CB延长线上一点, 且ÐBAE=ÐC. (1)求证:直线AE是⊙O的切线; (2)若EB='AB' , ,  AE=24,求EB的长及⊙O的半径。
【简答题】如图,△ABC内接于⊙O,AD是⊙O直径,E是CB延长线上一点,且∠BAE=∠C. (1)求证:直线AE是⊙O的切线; (2)若EB=AB, ,AE=24,求EB的长及⊙O的半径.
【简答题】如图,在长方体 ABCD ­ A 1 B 1 C 1 D 1 中,已知 AB =4, AD =3, AA 1 =2, E , F 分别是棱 AB , BC 上的点,且 EB = FB =1. (1)求异面直线 EC 1 与 FD 1 所成角的余弦值; (2)试在面 A 1 B 1 C 1 D 1 上确定一点 G ,使 DG ⊥平面 D 1 EF .
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