第十单元第四节同步练习试题

第一篇：第十单元第四节同步练习试题

1、说出呼吸系统的结构和功能

2、说出呼吸运动的过程

3、说出肺活量的概念，尝试使用自制的肺量计测量肺活量

4、在灰尘较多的地方停留久了，鼻腔前部的鼻毛及黏液中都粘有许多灰尘。这说明鼻腔对吸入的空气有什么作用?

5、北欧的冬天非常寒冷，在那里生活的人和我们相比鼻子的形状有什么特点?为什么?

6、患重感冒时，往往要用嘴呼吸。在这种情况下，早上醒来时会觉得嗓子非常干，为什么平时用鼻呼吸时，没有这种现象?

7、痰是怎样产生的?为什么不要随地吐痰?

8、根据以上问题，你认为呼吸道除了保证气流的畅通外，还有哪些作用?

9、有了呼吸道对空气的处理，人体就能完全避免空气中有害物质的危害吗?

10、你知道哪些呼吸系统疾病?你认为应如何预防?

第二篇：第四单元同步练习

I.Reading Comprehension

Passage One

Questions 1 to 5 are based on the following passage:

If the salinity(含盐量)of ocean waters is analyzed, it is found to vary only slightly from place to place.Nevertheless, some of these small changes are important.There are three basic processes that cause a change in oceanic salinity.One of these is the subtraction of water from the ocean by means of evaporation—conversion of liquid water-to-water vapor.In this manner, the salinity is increased, since the salts stay behind.If this is carried to the extreme, of course, white crystals of salt would be left behind;this, by the way, is how much of the table salt we use is actually obtained.The opposite of evaporation is precipitation(降水), such as rain, by which water is added to the ocean.Here the ocean is being diluted(冲淡)so that the salinity is decreased.This may occur in areas of high rainfall or in coastal regions where rivers flow into the ocean.Thus salinity may be increased by the subtraction of the water by evaporation, or decreased by the addition of fresh water by precipitation or runoff.Normally, in tropical regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation.Similarly, in coastal regions where rivers dilute the sea, salinity is somewhat lower than in other oceanic areas.A third process by which salinity may be altered is associated with the formation and melting of sea ice.When seawater is frozen, the dissolved materials are left behind.In this manner, seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared.Of course, when this ice melts, it will tend to decrease the salinity of the surrounding water.In the Waddell Sea, of America;the densest water in the oceans is formed as a result of this freezing process, which increases the salinity of cold water.This heavy water sinks and is found in the deeper portions of the oceans of the world.1.All of the following are processes that decrease salinity except ____.A.runoffB.evaporationC.meltingD.precipitation

2.The salinity of the oceanic water is generally higher in ____.A.tropical areasB.coastal regionsC.turbulent areasD.rainy regions

3.The Waddell Sea is mentioned in the passage to ____.A.give an example of cold water salinityB.point out the location of deep waters

C.compare Antarctic waters with Arctic watersD.indicate that this body of water has salinity variations

4.Which of the following statements is NOT TRUE, according to the passage?

A.Various factors combine to cause variations in the salinity of water.B.As a result of the formation of ocean ice water salinity decreases.C.The salinity of the water near the bottom of the oceans is relatively high.D.In coastal areas the ocean is diluted by rivers.5.The major points discussed in the passage is ____.A.the subtraction of water

B.the conversion of liquid water to water vapor

C.the salinity of ocean water

D.the effect of precipitation on the salinity of ocean water

Passage Two

Questions 1 to 5 are based on the following passage:

The cat has probably been associated with Man since it was first given a place by his fire in return for keeping the cave dwelling free of rats and mice.The relationship between the cat and Man has not been constant, however, Man’s attitude has ranged through indifference and neglect to the extremes of persecution(残害)and worship.The Egyptians had great faith in the power of a living cat to protect them from both natural and supernatural evils.They made small ornaments and charms representing cats and the various cat deities(神性).These decorated their homes and were buried with them to ensure that the soul of the dead person was protected on its perilous journey through the hostile spirit world.Pious Egyptians always mummified their cats and had them buried with almost as much reverence(尊严)as if they were human beings.At the end of the last century, a cat cemetery was discovered near the site of the ancient city of Bubastis.Here literally hundreds of thousands of little cat mummies were found ranged neatly on shelves.Some were stolen, destroyed, and antique dealers sold many to tourists.Thousands were left.

The ancient Jews believed that when a religious person who had reached a high degree of sanctity died, his soul entered the body of a cat and remained there until the cat itself died a natural death.Only then could it enter Paradise.Exactly the same belief existed in Burma and Thailand until comparatively recently, and beautiful sacred cats were kept in great luxury in the temples.When a member of the royal house of Siam died, his favorite cat was buried alive with him but a small opening was always left for its escape.When the cat emerged, the priests knew that the prince’s soul had safely entered its feline(似猫的)host, and the cat was ceremonially sent to the Temple.At the crowning of the young King of Siam in 1926, a white cat was carried by a court official in the procession to the Throne Room.The old King’s soul was resting in this cat, and his faithful former courtiers knew that he would want to be present at the crowning of his successor.6.Man’s attitude towards cats has been ____.A.constantly hostile throughout the ages

B.friendly

C.through many changes

D.negligent from time immemorial

7.The word “perilous” in the last sentence of Paragraph 2 most probably means ____.A.dangerousB.longC.boringD.pleasant

8.Ancient Egyptians buried catlike ornaments with them for the reason that ____.A.they had blind worship of cats

B.they had natural inclination to persecute cats

C.they hoped to be under the cat’s protection against all evils

D.cats were their pets

9.The ancient Jews held the belief that ____.A.good cats could enter paradise after they died a natural death

B.a good man’s soul was protected by a cat

C.a holy person’s soul entered a cat’s body after his death

D.man had to believe religion

10.At the 1926 Coronation of Siam a white cat was ____.A.escorted to the Temple

B.believed to be the spiritual guardian of the old king

C.presented to the new king

D.buried alive with the old king

II.Cloze

Directions: There are 20 blanks in the following passage, For each blank there are four choices marked A, B, C and D on the right side of the paper.You should choose the one that best fits into the passage.Then mark the corresponding letter on the Answer Sheet with a single line through the center.For the past two years, I have been working on students’ evaluation of classroom teaching.I have kept a record of informal conversations __1__ some 300 students from at __2__ twenty one colleges and universities.The students were generally __3__ and direct in their comments __4__ how course work could be better __5__.Most of their remarks were kindly __6__—with tolerance rather than bitterness—and frequently were softened by the __7__ that the students were speaking __8__ some, not all, instructors.Nevertheless, __9__ the following suggestions and comments indicate, students feel __10__ with things as they are in the classroom.

Professors should be __11__ from reading lecture notes.” It makes their __12__ monotonous(单调的).”If they are going to read, why not__13__ out copies of the lecture?

Then we __14__ need to go to class.Professors should __15__ repeating in lectures material that is in the textbook.“__16__ we’ve read the material, we want to __17__ it or hear it elaborated on, __18__ repeated.” A lot of students hate to buy a __19__ text that the professor has written __20__ to have his lectures repeat it.”

1.A.involvingB.countingC.coveringD.figuring

2.A.bestB.leastC.lengthD.large

3.A.reservedB.hardworkingC.politeD.frank

4.A.overB.atC.onD.of

5.A.presentedB.submittedC.describedD.written

6.A.receivedB.addressedC.madeD.taken

7.A.occasionB.truthC.caseD.fact

8.A.onB.aboutC.atD.with

9.A.thoughB.whetherC.asD.if

10.A.dissatisfiedB.unsatisfactoryC.satisfiedD.satisfactory

11.A.interferedB.interruptedC.discouragedD.disturbed

12.A.voicesB.soundsC.pronunciationD.gestures

13.A.holdB.leaveC.dropD.give

14.A.couldn’tB.wouldn’tC.mustn’tD.shouldn’t

15.A.refuseB.prohibitC.preventD.avoid

16.A.OnceB.UntilC.HoweverD.Unless

17.A.rememberB.argueC.discussD.keep

18.A.yetB.notC.andD.or

19.A.desiredB.revisedC.requiredD.deserved

20.A.aboutB.howC.butD.only

第三篇：北师大版数学一年级下册第六单元第四节阅览室同步练习

北师大版数学一年级下册第六单元第四节阅览室同步练习

姓名:________

班级:________

成绩:________

小朋友，带上你一段时间的学习成果，一起来做个自我检测吧，相信你一定是最棒的!

一、填空题

(共10题；共40分)

1.（3分）240里面有_______个百和_______个十，也可以看作是_______个十。

2.（1分）650－370=_______

3.（1分）由图写数

_______

4.（10分）按照数的顺序填数。

（1）

（2）

5.（2分）填＞、＜或=

402－164_______127＋183

10×9＋30_______10×8＋40

6.（3分）_______－_______＝_______

7.（10分）你能快速算出下面各题吗？试一试．

2×7＋8＝_______

12×4＝_______

43＋29＝_______

6×3＋5＝_______

50×7＝_______

500－9＝_______

7×8＋6＝_______

120×4＝_______

30×6＝_______

864－300＝_______

8.（1分）修路队要修一段长975千米的公路，第一组修了234千米，第二组修了326千米，剩下的由第三组修，第三组要修_______千米？(用两种方法解答)

9.（8分）直接写出得数．

280÷40=_______

14×20=_______

84÷3=_______

48﹣48÷24=_______

360÷12=_______

460﹣80=_______

125×8=_______

450÷5÷3=_______

10.（1分）夺红旗．

_______

二、判断题

(共5题；共10分)

11.（2分）40减去20得20。

12.（2分）从右边起第一位是十位，第二位是个位。

13.（2分）判断对错234－75＋25=234－100

14.（2分）学校足球队原来有36人，退出14人后，足球队现在有22人

15.（2分）从左数第4个是。

三、选择题

(共5题；共10分)

16.（2分）“25○52”，比较大小，在○里应填的符号是（）

A

.＞

B

.＜

C

.＝

D

.＋

17.（2分）“500×4○2000”,比较大小，○里应填的符号是（）

A

.＞

B

.＜

C

.=

D

.÷

18.（2分）168＋235－114＝（）

A

.285

B

.286

C

.288

D

.289

19.（2分）计算并验算

679＋5758＋896=（）

A

.4120

B

.7333

C

.8126

D

.8547

20.（2分）9角+5元=（）

A

.5元9角

B

.14元

四、应用题

(共5题；共28分)

21.（5分）小白兔付了50元买了一个排球，找回18元，一个排球多少钱？

22.（5分）停车场里有小汽车35辆，公交车比小汽车少8辆，大卡车比公交车多6辆，有多少辆公交车？多少辆大卡车？

23.（5分）楠楠比佳佳少背了多少个单词？

24.（10分）晓军准备参加某市小学生运动会，爸爸到商场帮他购买运动套装（鞋、衣、裤）。

商品

单价

215元

288元

176元

（1）晓军的爸爸大约应该准备多少钱才够呢？

（2）收银员应收多少钱?

25.（3分）看图回答

（1）自行车和摩托车一共有_______辆.（2）小汽车比公共汽车多_______辆.（3）这四种车一共有_______辆.参考答案

一、填空题

(共10题；共40分)

1-1、2-1、3-1、4-1、4-2、5-1、6-1、7-1、8-1、9-1、10-1、二、判断题

(共5题；共10分)

11-1、12-1、13-1、14-1、15-1、三、选择题

(共5题；共10分)

16-1、17-1、18-1、19-1、20-1、四、应用题

(共5题；共28分)

21-1、22-1、23-1、24-1、24-2、25-1、25-2、25-3、

第四篇：北师大版数学一年级下册第五单元第四节拔萝卜同步练习

北师大版数学一年级下册第五单元第四节拔萝卜同步练习

姓名:________

班级:________

成绩:________

小朋友，带上你一段时间的学习成果，一起来做个自我检测吧，相信你一定是最棒的!

一、填空题

(共10题；共50分)

1.（6分）口算。

102+50=

_______  79+29=

_______  53+28=_______

86+32=

_______  84+18=_______     77+52=_______

2.（24分）口算

8+3=_______ 15+5=_______6+7=

_______18-8=_______17-4=_______

0+17=_______11+2=_______16+4=_______14+4=_______9-6=

_______

16-0=_______13+6=_______8+8=_______9+9=_______19-2=_______

16-5=_______12+8=_______13+3=_______13+7=_______17-7=_______

15+3=_______ 8+9=_______11+4=_______7+7=_______

3.（2分）口算

630－90=_______

490＋80=_______

4.（4分）请你用最快的速度算出下面各题，观察题目有什么特点，计算时有什么规律呢？

42－24＝_______

75－57＝_______

54－45＝_______

82－28＝_______

5.（2分）找规律，填一填．

4，3，6，9，8，27，10，_______，_______．

6.（2分）15与24的和是_______，再减去20，结果是_______。

7.（3分）笔算下列各题．

（1）27＋16=_______

（2）62－19=_______

（3）98－15=_______

8.（4分）在同一个算式的横线上填上相同的数。(仿练教材第73页第15题)

40-_______=30+_______

48+_______=54-_______

9.（1分）比100小1的数是_______。

10.（2分）在横线上填上＞、＜或=．

（1）40＋35_______95－20

（2）76－40_______76－60

二、判断题

(共5题；共10分)

11.（2分）最小的三位数比最大的两位数大1（）

12.（2分）两个加数都是30，和是60

（）

13.（2分）97前面的数是98，后面的数是96。

14.（2分）9999比10000大

15.（2分）34＋20＜60。

三、选择题

(共5题；共10分)

16.（2分）127＋73=（）

A

.10

B

.200

C

.4

D

.17.2

17.（2分）461－72=（）

A

.388

B

.289

C

.389

D

.398

18.（2分）一个数最高位十万位是8，十位上是9，其余各位上的数都是0，这个数是（）

A

.800090

B

.8009000

C

.90008

19.（2分）★比◆多（）

A

.0

B

.1

C

.2

D

.3

20.（2分）玲玲家的电表读数如下表：(单位：千瓦时)

4月底

5月底

6月底

7月底

8月底

9月底

628

668

715

753

795

840

要计算她家6，7月共用电多少千瓦时，下面列式正确的是（）。

A

.715＋753

B

.753－668

C

.795－715

四、应用题

(共5题；共27分)

21.（5分）买一台电视和一台电饭煲一共花多少元？

22.（2分）计算6947＋62785=

（1）6947＋62785=_______

（2）806＋17420=_______

23.（5分）花店运进624朵月季花，每12朵扎成一束，可以扎成几束？上午已卖出34束，花店还剩下月季花多少束？

24.（5分）妈妈看一本故事书，已经看了14页，还有34页没看，这本故事书有多少页？

25.（10分）

（1）李叔叔乘坐依维克车去泰安，车票是多少钱？

（2）他拿80元钱买了些食品，找回33元，买食品花了多少钱？

参考答案

一、填空题

(共10题；共50分)

1-1、2-1、3-1、4-1、5-1、6-1、7-1、7-2、7-3、8-1、9-1、10-1、10-2、二、判断题

(共5题；共10分)

11-1、12-1、13-1、14-1、15-1、三、选择题

(共5题；共10分)

16-1、17-1、18-1、19-1、20-1、四、应用题

(共5题；共27分)

21-1、22-1、22-2、23-1、24-1、25-1、25-2、

第五篇：北师大版数学四年级上册第一单元第四节近似数同步练习

北师大版数学四年级上册第一单元第四节近似数同步练习

姓名:________

班级:________

成绩:________

小朋友，带上你一段时间的学习成果，一起来做个自我检测吧，相信你一定是最棒的!

一、填空题

(共10题；共21分)

1.（1分）将计算结果凑整到分．(用四舍五入法)

80.75元÷7≈_______

2.（2分）如果保留两位小数，表示精确到_______位，应看小数部分的_______位。

3.（3分）小数混合运算的顺序与_______混合运算的顺序一样．

由3个1，9个0.1，6个0.01组成的数是_______，精确到十分位是_______．

4.（2分）近似值为6.90的最大三位小数为_______，最小三位小数为_______。

5.（1分）将计算结果凑整到分．(用四舍五入法)

430.55元÷3≈_______

6.（3分）4.385385385……，它的循环节是_______，用简便方法表示是_______，将它保留三位小数是_______。

7.（2分）求商的近似值，只要计算到比要保留的小数位数_______就可以了。

求积的近似值，要计算出_______以后再取近似数。

8.（3分）求近似数时，保留整数，表示精确到_______位；保留一位小数，表示精确到_______位；保留两位小数，表示精确到_______位。

9.（2分）一个两位小数的近似数是6.0，这个两位小数最大可能是_______，最小可能是_______。

10.（2分）在横线上填上>、<或=

（1）_______

（2）_______

二、判断题

(共6题；共12分)

11.（2分）近似数5和5.0比较，5.0比5精确．（判断对错）

12.（2分）9.956保留一位小数是9.0。

13.（2分）把4.998保留到十分位是5．

14.（2分）4.56÷2.3的得数保留一位小数是2.0。

15.（2分）近似数是6.32的三位小数不止一个。

16.（2分）准确数有时大于近似数，有时小于近似数。

三、选择题

(共5题；共10分)

17.（2分）估一估他可能买了哪种篮球．正确的答案是（）

A

.48元

B

.38元

C

.28元

18.（2分）（2015•贵阳）一个两位小数精确到十分位是5.0，这个数最小是（）

A

.4.99

B

.5.1

C

.4.94

D

.4.95

19.（2分）求小数的近似数时，小数末尾的“0”（）去掉．

A

.能

B

.不能

C

.无法判断

20.（2分）下列各数精确到0.01，错误的是（）。

A

.5.416≈5.42

B

.7.322≈7.32

C

.7.022≈7.02

D

.3.769≈3.80

21.（2分）0.987精确到十分位是（）

A

.1

B

.1.0

C

.0.9

D

.0.99

四、应用题

(共4题；共20分)

22.（5分）将下列数凑整到万．

23.（5分）一个数省略万位后面尾数是5万，那么这个数最大是多少？最小是多少？

24.（5分）有一个三位小数，四舍五入后是8.40，原来的三位小数可能会是哪些数？

25.（5分）五年级有班费24.2元，同学们卖废品又得到16.4元。同学们想用这些钱买7元一本的《少年科技》书，能买几本？

参考答案

一、填空题

(共10题；共21分)

1-1、2-1、3-1、4-1、5-1、6-1、7-1、8-1、9-1、10-1、10-2、二、判断题

(共6题；共12分)

11-1、12-1、13-1、14-1、15-1、16-1、三、选择题

(共5题；共10分)

17-1、18-1、19-1、20-1、21-1、四、应用题

(共4题；共20分)

22-1、23-1、24-1、25-1、