人教版(2019)必修第三冊《Unit 1 Festival and celebrations》2021年同步練習(xí)卷(Listening and Speaking 課后一練)
發(fā)布:2024/4/20 14:35:0
一、單句語法填空
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1.Festivals
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2.The harvest festival usually takes place after all the crops
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3.During the Mid-Autumn Festival in China,families gather to admire the
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二、閱讀理解
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8.With their furry round heads and big black eyes,Zhongzhong and Huahua look just the same as any other monkey.But they happen to be the world's first cloned monkeys.
Years ago,scientists used cloning techniques to produce Dolly,the world's first cloned mammal(哺乳動物).They now used the same technique to produce the monkeys in China.
In animal cloning,animals are produced in a lab by using DNA that is taken from the cells of a naturally-born animal.To clone Zhongzhong and Huahua,scientists from the Chinese Academy of Sciences(CAS)first removed the nucleus (細(xì)胞核)from a monkey's egg cell.They then put another nucleus taken from the monkey's body cells into the egg cell.The newly-formed egg was put into the womb(子宮)of a female monkey.Finally,Zhongzhong and Huahua were born.
The cloning process is hard,especially removing nucleus.It needs to be done in a fast and precise(精確的) way.The faster you do it,the less damage is done to the egg,according to CAS.Scientist Liu Zhen spent three years practising removing the nucleus.
Unlike common monkeys,cloned monkeys have the same DNA as each other.When doing experiments on them,scientists can easily know that certain results are caused by different treatments,rather than different genes.
According to Sun Qiang from CAS,most drug trials(藥物試驗(yàn))are done on lab mice.However,drugs that work on mice might not work on humans.The two species are very different.
"Monkeys and humans are closely related and testing on monkeys is supposed to be as effective as testing on humans," Sun added.
(1)What can we learn about Zhongzhong and Huahua?
A.They are naturally-born monkeys.
B.They are the world's first cloned mammals.
C.They are the world's first cloned monkeys.
D.They are twin sheep that were born by Dolly.
(2)What do we know about the two monkeys?
A.They look different from other monkeys.
B.They have the same DNA.
C.Their body cells don't have any nucleus.
D.They can live for only three years.
(3)What can we learn from Paragraph 4?
A.Removing the nucleus is difficult.
B.The cloning process is very safe.
C.It took three years to remove the nucleus.
D.It is impossible to clone other animals.
(4)Why do scientists want to do drug tests on monkeys?
A.Because it's easier to use them for tests.
B.Because there are not enough mice.
C.Because drugs work well on monkeys.
D.Because monkeys are similar to humans.組卷:10引用:1難度:0.5
三、書面表達(dá)
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9.假如你是李磊,你的英國筆友Jack來信詢問中國的春節(jié)。請根據(jù)以下提示,給他回一封不少于100詞的電子郵件,介紹中國的節(jié)日——春節(jié),開頭、結(jié)尾已給出,不計入總詞數(shù)。
要點(diǎn)提示:
1.春節(jié)是中國的傳統(tǒng)節(jié)日之一,它也是中國最重要的節(jié)日;
2.慶祝春節(jié)的目的在于辭舊迎新;
3.在中國,人們以多種形式慶祝春節(jié),如:在一些地區(qū)放煙花爆竹,吃團(tuán)圓飯等;
4.春節(jié)時,家家戶戶吃餃子,長輩給小孩發(fā)壓歲錢;
5.人們見面時,相互拜年,祝福大家在新的一年里有好運(yùn)氣。
Dear Jack,
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Yours,
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