下图为我国地势阶梯分布示意图,图中第三级阶梯的主要地形类型是( )
A:高原、盆地
B:高原、丘陵
C:高原、平原
D:平原、丘陵
Our Trip to Yibin City
When
On Friday.
How
We will go there 1.
What
But you will need to bring 2 .
Where
Then in the afternoon we will go to 3.
What time
⑴Now please remember that the bus will leave right at 4 .
⑵Tell your parents we'll be back at school 5.
如图,已知四边形ABCD内接于圆,对角线AC与BD相交于点E,F在AC上,AB=AD,∠BFC=∠BAD=2∠DFC.
(1)若∠DFC=40°,求∠CBF的度数;
(2)求证:CD⊥DF.
选择恰当的词语搭配。
穿过____ 花环
透过____ 珍珠
泼洒____ 密林
编织____ 树叶