题目内容
It's the museum! So you know shouting is not allowed here.
A.can B.could C.must D.may
—_____ do you have an art lesson?
—Four times a month.
A.How long B.How many C.How often D.What
领导们会讨论如何处理这些旧机器。
The leaders will discuss________these old machines.
Where did humans come from? An Australian researcher believes that she’s found the answer: river valley in the African country of Botswana (博瓦纳).
Professor Vanessa Hayes from the Garvan Institute of Medical Research in Sydney said she and her team have traced (追踪) modern humans back to small group of people who lived in this valley, according to the BBC.
“It’s an extremely large area, it would have been very lush (苍翠繁茂的), and it would have actually provided a suitable habitat for modern humans,” she said. She and her team studied mitochondrial (线粒体的) DNA (mtDNA) from people who live in south Africa, such as the Khoisan people. This type of DNA is only passed down from mother to child. This makes it easier to trace one’s ancestry (祖先), according to Business Insider. By tracing mtDNA back through different generations, the team concluded that every person alive today is related to a woman who lived in Botswana.
However, some experts doubt Hayes’ findings, saying that studies like hers are no longer important or necessary. “The idea that we’re looking for a single origin [of modern humans] is out of fashion,” said John Hawks, a researcher at the University of Wisconsin-Madison, US, in Popular Science.
There are many other locations around the world where humans could have gotten their start. It is likely that mankind appeared in many places at the same time. “I increasingly think that there probably wasn’t a single population in which modern humans evolved (进化). If that is the case, there is no ‘homeland’,” said Ryan Raaum, who researches African population genetics (遗传学) at Lehman College, US.
1.According to Hayes, where did humans come from?
A.Australia. B.Botswana. C.South Africa. D.Latin America.
2.Hayes and her team studied mtDNA because ________.
A.it is the most common type of DNA humans share B.there is a new technology to test mtDNA
C.it is only passed down from mother to child D.both women and men can take mtDNA tests
3.According to Hawks, Hayes’s study is ________.
A.important B.wrong C.fascinating D.unnecessary
4.What is the story mainly about?
A.New findings about the origin of humans. B.New findings about mtDNA.
C.The evolution of humans. D.The habitats of ancient humans..
— When did you become a member of “Helping Hands Club”?
— I ________ in this organization since 2012.
A.joined B.took part C.have joined D.have been
Mike used to be a top student, but he _______ behind since he lost himself in computer games.
A.fell B.has fallen C.was D.has been
My father took us to the History Museum last Sunday. (对划线部分提问)
________did your father________ you to the History Museum?
The second batch of medical teams from Chongqing rushed to Wuhan ________ the afternoon of Jan. 28th.
A.to B.in C.at D.on
B)根据短文内容和首字母提示,填写所缺单词,并将答案填写在标号为66~75的横线上。
Putting on a play can be fun. Acting can be like the “let’s pretend and dress-up games children play. Actors pretend(扮演),for a little while, to be other people. They t1. to look like and talk as other persons do.
Professional(职业的) actors take part in plays and television programs given in large cities. They make their .l2. by acting. But other people act in plays just for fun and are not p3. for their work. They are high school or college students and adults who are members of “little theatre” groups. In the d4., they are students, teachers, doctors, lawyers, or police officers. They are actors o5. in the evenings or on weekends.
The little theater groups has a long history in America. One of the o6. groups is in Indiana. They are called the Players Club, and they put on eight plays a year. People in the city buy tickets to see the plays. A7. who wants to act may join the Players Club. Before each play, auditions(试演) are held so that people can try o8. for the different parts. Not all members of the group are actors. People are also needed to h9. with the lighting, clothes and makeup.
There are little theater groups in many cities. They continue to put on plays because they bring p10. to a large number of people. People in a little theater group enjoy having the chance to act, and the audience enjoy watching the plays.