1.单选题- (共9题)
A．25海里  | B．30海里 | C．35海里 | D．40海里 |
的值为（ ）.
| A．49 | B．25 | C．13 | D．1 |
，则此三角形（ ）.| A．在△ABC中，若∠A＝∠C－∠B ，则△ABC是直角三角形 |
B．在△ABC中，若 ，则△ABC是直角三角形 |
| C．在△ABC中，若∠A、∠B、∠C的度数比是5：2：3，则△ABC是直角三角形 |
| D．在△ABC中，若三边长a：b：c＝2：2：3 ，则△ABC是直角三角形 |
2.选择题- (共5题)
阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
It's always thought that only those heavy things make people hard to endure.But as a matter of fact，those slight things are {#blank#}1{#/blank#} (much) difficult to resist.It's slight，but it will always be in the bottom of your heart，making it {#blank#}2{#/blank#} (possible) for you to get rid of it all through your life.
It's just like John Nash in “A Beautiful Mind”．You can imagine how terrible it is to live in a world full of mental illusion.When he realizes {#blank#}3{#/blank#} (clear) about all of these but can't get rid of the illusions，his mentality will be on the edge {#blank#}4{#/blank#} collapsing.On the other hand，Nash is happy and {#blank#}5{#/blank#} (luck) because his wife companied with him.She used her wifely heart to forgive all.When her husband {#blank#}6{#/blank#} (be) weak，she opened the window of his heart with her soft hands.She used her wifely endurance to go forward step by step in the difficult life.She used her wifely {#blank#}7{#/blank#} (persist) of love.
I can still remember the scene that when old Nash {#blank#}8{#/blank#} (stand) on the stage of Nobel Prizes，he looked at his wife full of love.I think Nash has found the answer of Balance Theory {#blank#}9{#/blank#} he has been studying throughout his life.The balance of his life is the love of his wife.
{#blank#}10{#/blank#} changes a lot with time，only love will last forever.
3.填空题- (共5题)
＝_____；4.解答题- (共4题)
(1)这个梯子底端离墙有多少米？
(2) 如果梯子的顶端下滑了4m，那么梯子的底部在水平方向也滑动了4m吗?为什么?
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【1】题量占比
单选题:(9道)
选择题:(5道)
填空题:(5道)
解答题:(4道)
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【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：1
7星难题：0
8星难题：0
9星难题：17