1.单选题- (共4题)





A. 4个 B. 3个 C. 2个 D. 1个
2.选择题- (共9题)
Annie, my neighbor's daughter, was away for her first term at college this year. She is a very sweet girl but just a bit shy. When her birthday month 1, I found out she was feeling a bit blue and 2.
Her family is quite 3 and finances are tight, so there wouldn't be any birthday visitors.
I wanted to send her a card and maybe a small gift to 4 her up. I got her school address from her mom and planned to 5 send her something. Then I got a(n) 6! I thought perhaps I could give her a big 7. I bought some balloons, birthday hats and other small novelties (新奇玩意) at a one-dollar 8. I took a small 9 and asked three other people in my area to sing Happy Birthday and send some birthday 10 to her. Other people found out 11 we were doing and added their voices, 12 it really sounded like we had a party 13 .
Then I bought her a small present and a card as 14 originally. The real fun was 15 it to be sent. I arranged everything specially so it was like opening a birthday present!
At the last minute, I added a pack of small cakes and a box of birthday 16 before sending it off.
I got a call a few days later. Annie said her roommate and one of her neighbors in her school got together with her and held the party for her once it arrived. She sounded so 17 and I was so glad that she had some friends to 18 her special day with her.
It was such an easy and fun thing to do. The people who helped me make the tape still laughed and talked about the 19 experience. And Annie told me it was the most fun birthday she can 20!
种群 | 输入的 总能童 | 用于生长发育 和繁殖的能量 | 呼吸 消耗 | 传递给 分解者 | 传递给下一营养级 | 未被利用 的能量 |
A | 65.5 | 3.0 | 15.0 | 41.5 | ||
B | 15.0 | 5 | 0.5 | 2.5 | ||
C | 2 | 0.6 | 1.4 | 微量(不计) | 无 |
3.填空题- (共7题)
4.解答题- (共6题)










(1)


(2)若




(3)已知





x(元/件) | 38 | 36 | 34 | 32 | 30 | 28 | 26 |
t(件) | 4 | 8 | 12 | 16 | 20 | 24 | 28 |
(1)试求t与x之间的函数关系式;
(2)在商品不积压且不考虑其它因素的条件下,每件服装的销售定价为多少时,该小商场销售这种服装每天获得的毛利润最大?每天的最大毛利润是多少?(注:每件服装销售的毛利润=每件服装的销售价-每件服装的进货价)
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【1】题量占比
单选题:(4道)
选择题:(9道)
填空题:(7道)
解答题:(6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:9
7星难题:0
8星难题:4
9星难题:4