1.选择题- (共1题)
1.通读全文, 根据短文内容理解, 选择最佳答案填空。
After Mom died, I began visiting Dad every morning before I went to work. He was weak. He always put a glass of 1 on the kitchen table for me, with a note reading, "Drink your juice."
As a kid, I once 2 Mom, "Why doesn't Dad love me?" Mom asked me, "3? Why do you think so?" "Well, he never tells me," I said. "But 4, how hard he works to take care of us. That's how he 5 his love."
Many years later, after drinking the juice, I hugged（拥抱） my father and said, "I love you, Dad." From then on, I did that every 6. My father never told me how he felt about my hugs.
Then one day, I didn't hug him and just 7 towards the door. Dad said, "Well？"
"Well, what?" I asked. "Well……" he said again, holding out his 8. Then I hugged him, and told him, "I'm fifty years old, Dad. You've 9 told me you love me." A minute later, Dad said, "All right! I 10 you." Although he spoke in a very low voice, I heard it clearly.
After Mom died, I began visiting Dad every morning before I went to work. He was weak. He always put a glass of 1 on the kitchen table for me, with a note reading, "Drink your juice."
As a kid, I once 2 Mom, "Why doesn't Dad love me?" Mom asked me, "3? Why do you think so?" "Well, he never tells me," I said. "But 4, how hard he works to take care of us. That's how he 5 his love."
Many years later, after drinking the juice, I hugged（拥抱） my father and said, "I love you, Dad." From then on, I did that every 6. My father never told me how he felt about my hugs.
Then one day, I didn't hug him and just 7 towards the door. Dad said, "Well？"
"Well, what?" I asked. "Well……" he said again, holding out his 8. Then I hugged him, and told him, "I'm fifty years old, Dad. You've 9 told me you love me." A minute later, Dad said, "All right! I 10 you." Although he spoke in a very low voice, I heard it clearly.
2.填空题- (共13题)
，且cos α＝－
，则tan
＝__________．
，α∈
，那么sin 2α＝__________．
，则cos 2θ＝__________．
cos 2°－
sin 2°，b＝
，c＝
，则a，b，c的大小关系为__________．
的值为________．
，则△ABC的形状是__________．
的前n项和为
，若
中，
，则
_________.
，
，
，
中，前三项依次成为公差为
的等差数列，后三项依次成为公比为
的等比数列，若
，则
13.
设m，n是两条不同的直线，α，β，γ是三个不重合的平面，给出下列四个命题：
① 若β∥γ，α∥γ，则α∥β；② 若α⊥β，m∥α，则m⊥β；
③ 若m⊥α，m∥β，则α⊥β；④ 若m∥n，n
α，则m∥α.
其中正确的命题是________．(填序号)
14.
设a，b是不同的直线，α，β是不同的平面，则下列四个命题中正确的是________．(填序号)
① 若a⊥b，a⊥α，则b∥α；② 若a∥α，α⊥β，则a⊥β；
③ 若a⊥β，α⊥β，则a∥α；④ 若a⊥b，a⊥α，b⊥β，则α⊥β.
3.解答题- (共6题)
15.
(本小题满分16分)如图，有一直径为8米的半圆形空地，现计划种植甲、乙两种水果，已知单位面积种植甲水果的经济价值是种植乙水果经济价值的5倍，但种植甲水果需要有辅助光照．半圆周上的
处恰有一可旋转光源满足甲水果生长的需要，该光源照射范围是
,点
在直径
上，且
．
（1）若
，求
的长；
（2）设
, 求该空地产生最大经济价值时种植甲种水果的面积．
处恰有一可旋转光源满足甲水果生长的需要，该光源照射范围是,点在直径上，且．（1）若
，求的长；（2）设
, 求该空地产生最大经济价值时种植甲种水果的面积．
，sin α＝
.
的值；
的值．
，Tn是数列{cn}的前n项和，求证:
18.
已知等比数列{an}的公比q>1，且满足a2＋a3＋a4＝28，且a3＋2是a2，a4的等差中项．
，Sn＝b1＋b2＋…＋bn，求使
成立的正整数n的最大值．
（1）求数列{an}的通项公式；
（2）若bn＝log，Sn＝b1＋b2＋…＋bn，求使成立的正整数n的最大值．
试卷分析
-
【1】题量占比
选择题:(1道)
填空题:(13道)
解答题:(6道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：0
7星难题：0
8星难题：0
9星难题：19