英语 暑假综合练习13-【快乐假期•暑假作业】七年级合订

快乐假朗 月 暑假综合练习十三 [.单项选择。 )1.Sally has three brothers. is a doctor, are drivers. A.One;another B.One;the others C.The one;the other D.One;the other )2. is my son.Do you like to play with ? A.You;you B.She;her C.I;me D.He;him ( )3.Mr Green is our English teacher. comes from Australia. A.He B.She C.It D.They ()4.My parents are workers. both work in the same factory. A.Them B.They C.He D.She )5.Miss Brown will teach English next term. A.us B.we C.our D.ours )6.There is egg at home.Will you please get for me,Mary? A.no;some B.not;some C.not any;any D.not an;any ()7.Lucy and I are classmates.We in Class One. A.all are B.are all C.both are D.are both ()8.Some students are cleaning their classroom, are cleaning the windows, are cleaning the chairs. A.one;other B.one;others C.some;others D.some;other ()9.-Excuse me.Are you Bill and Kate? -Yes,we are. -These books are for -Thank you. A.you and he B.she and you C.you and her D.me and him ()10.-Please pass the eraser.I want to use it. -OK.Here you are. A.we B.me C.them D.she Ⅱ.完形填空。 Mr Brown 11 a small shop in the middle of our city,and he 12 pictures in it. They are not expensive and some of 13 are very nice. ·50 暑假作业·七年级 One day,a woman 14 into the shop and looks at a lot of pictures.Then she takes Mr Brown 15 one of them and asks,"16 is this picture?"It's a picture 17 horses in a field. “Twenty dollars,”Mr Brown answers. "It's 18 expensive.I can 19 you two dollars for it,"says the woman. “Two dollars?But you20 buy the canvas(油画布)with two dollars.” “Oh,but it isn't clean now,”the woman says. ( )11.A.has B.have C.there is D.there are )12.A.draws B.buys C.sells D.sees ( )13.A.they B.them C.their D.theirs ( )14.A.come B.comes C.came D.coming ( )15.A.at B.to C.for D.with ( )16.A.How much B.How many C.How old D.How ( )17.A.on B.with C.from D.of )18.A.no B.not C.too D.very )19.A.give B.let C.take D.want )20.A.can B.can't C.are D.aren't Ⅲ.阅读理解。 阅读下面的短文，判断文后句子的正(T)误(F)。 Susan is twenty years old.Her eyes are not good and she often wears glasses.But she didn't wear her glasses yesterday.Do you know why? Yesterday she went out with a young man.They visited some nice places in the man's car.When she came back home in the evening,her mother asked her,"Why did you not wear your glasses today??Idon't think you could see things clearly(清楚地).”“Of course I could not see things clearly.But he looked nice to me,"said Susan. ()21.Susan often wears glasses because she doesn't have good eyes. )22.Yesterday Susan lost her glasses. ()23.Susan and her mother went out to visit some nice places in a car. ( )24.Susan's mother didn't think Susan saw things clearly yesterday. )25.Susan likes the young man and thinks he is handsome(英俊的). 。517.the;a 8.the 9.the 10.the;the 11.C 12.B 13.A14.B15.C16.E17.B18.A19.F20.D 暑假综合练习十三 1.B2.D3.A4.B5.A6.A7.D8.C9.C 10.B11.A12.C13.B14.B15.B16.A 17.D18.C19.A20.B21.T22.F23.F 24.T25.T 暑假综合练习十四 1.D解析：氢氧化钠溶于水放热，可使石蜡受热熔化。 2.B解析：⑧是卵细胞，受精后变成受精卵，将来发育 成种子的主要部分胚；桃花异花传粉过程主要借助昆 虫来完成；图中有两性细胞的结合，属于有性生殖。 3.C4.D 5.A解析：根据题意可知t=s/v=1.3×1012m/(3× 103m/s)≈4.33×103s≈1.2h。 6.C解析：②是水蒸气放热液化现象，④是水蒸气放 热凝华现象。 7.B解析：空气污染物主要是污染性气体和可吸入颗 粒物。 8.B解析：燕子产的卵是一个受精卵；燕子卵中的胚 盘含遗传物质，是发育成雏鸟的结构；小燕子和母体 的形态结构差别不大，不属于变态发育。 9.D解析：D项操作木条燃烧消耗较多氧气，不利于 铁丝的燃烧。 10.D解析：根据题图可知Q接电源负极；乙中产生的 气体是氧气，不可以燃烧，但可以助燃；实验产生A、 B两种气体的体积之比为2：1。 11.C解析：蜻蜓是不完全变态发育，发育过程可表示 为D+A+C;C为成虫期；若表示蚕的发育过程，应 设法延长A幼虫期。 12.B解析：群落是一定范围内所有生物的集合。 13.C14.A 15.B解析：图甲中a固体有剩余，故两溶液的溶质质 量不相等；N是b物质的溶解度曲线；根据图丙可 知，30℃时，两溶液的溶质质量分数相等。 16.（1)氧气(2)二氧化碳(3)水蒸气 17.(1)晶体固液共存(2)96小于(3)b 18.②④ 19.(1)剧烈燃烧、火星四射、生成黑色固体铁十氧气 点燃四氧化三铁(2)防止高温熔融物掉落使集气 暑假作业·七年级 瓶炸裂 20.出芽生殖② 21.②③④⑦①⑥ 22.(1)草→鼠→猫头鹰(2)分解者(3)自动调节能 力(4)递减 23.(1)紫(2)能 24.(1)30无影响(2)B 25.(1)小玻璃罩中蜡烛燃烧产生热的二氧化碳上升，在 顶部积聚并逐渐下沉(2)小玻璃罩中蜡烛燃烧对 周围空气温度的影响(3)大玻璃罩中蜡烛燃烧时， 产生热的二氧化碳上升，到一定高度后冷却，由于二 氧化碳的密度比空气大从周围下沉，导致玻璃罩底 部二氧化碳积聚并逐渐上升，所以B组实验低处烛 焰先熄灭 26.(1)温度氢氧化钠溶液浓度(2)温度越高，电解 水的速率越快(3)A 27.(1)4水(2)种子萌发消耗氧气，产生的二氧化碳 被氢氧化钠溶液吸收，使大烧杯内气压变小，大气压 将水槽中的水压入大烧杯内 (2) ◆A MimmmmhnN R 29.(1)产生大量白烟10(2)先向右后向左6 30.(1)水汽输送⑤(2)纬度越高，人均水资源拥有 量越少 31.(1)A(2)C(3)变小 32.(1)氯化钠根据氯化钠的溶解度，在20℃时，饱和 氯化钠溶液的溶质质量分数=36g/(36g+100g) ≈26.5%，26.5%<30%，质量分数达不到30%，所 以不可能是氯化钠。(2)设需要加水的质量为x, 30g×30%=(30g十x)×10%,x=60g。 暑假综合练习十五 1.C解析：目前地球上可以被人类利用的淡水主要包 括湖泊淡水、土壤水、河水及分布较浅的地下淡水等。 2.B解析：溶液可以有颜色，如硫酸铜溶液为蓝色。 3.D解析：通过水循环示意图可知，自然界中的水总 量不变，但可供人们利用的淡水资源很少，且分布不 均匀，我们必须节约用水。 4.C解析：①氢气填充气球，利用氢气密度比空气小 ·89·