In many ways, Mars is the planet which is most ___ Earth.

A.applied

B.demanded

C.owned

D.disagreed

阅读短文，在空白处填入适当的介词。

With One day, Mr. Green told his students to make sentences (1) the words“love, hate” and so on. The kids were all busy (2) the work on their notes.

(3) several minutes many of them handed in their work (4) the teacher.Mr. Green read the notes one (5) one. And most(6)the sentences made by the children were good. There was a big smile(7)his face. Just (8) that time he found a piece of red paper. On it there was such a sentence,“I love my mother better than my father.”“Eim... OK!”said Mr.Green,“but..”He turned over the paper.

He found there were no names (9) that paper. He read the sentence again and again. And slowly the big smile (10) his face was gone. Then he said to the class, “ Whose paper is this？”Tom stood up and said,“It's mine, sir.”

A.move

B.start

C.run

D.keep

A.lives

B.lived

C.has lived

A.commute

B.transport

C.communicate

D.conduct

A.cosmetic

B.plastic

C.realistic

D.domestic

A.universal

B.compulsory

C.requested

D.general

A.many

B.much

C.a little

D.little

For thousands of years, people have known that the best way to understand a concept is to explain it to someone else. "While we teach, we learn," said Roman philosopher Seneca. Now scientists are bringing this ancient wisdom up-to-date. They're documenting why teaching is such a fruitful way to learn, and designing innovative ways for young people to engage in instruction. Researchers have found that students who sign up to tutor others work harder to understand the material, recall it more accurately and apply it more effectively. Student teachers score higher on tests than pupils who're learning only for their own sake. But how can children, still learning themselves, teach others？ One answer: They can tutor younger kids. Some studies have found that first-born children are more intelligent than their later-born siblings (兄弟姐妹). This suggests their higher IQs result from the time they spend teaching their siblings. Now educators are experimenting with ways to apply this model to academic subjects. They engage college undergraduates to teach computer science to high school students, who in turn instruct middle school students on the topic. But the most cutting-edge tool under development is the "teachable agent"—a computerized character who learns, tries, makes mistakes and asks questions just like a real-world pupil. Computer scientists have created an animated (动画的) figure called Betty's Brain, who has been "taught" about environmental science by hundreds of middle school students. Student teachers are motivated to help Betty master certain materials. While preparing to teach, they organize their knowledge and improve their own understanding. And as they explain the information to it, they identify problems in their own thinking. Feedback from the teachable agents further enhances the tutors' learning. The agents' questions compel student tutors to think and explain the materials in different ways, and watching the agent solve problems allows them to see their knowledge put into action. Above all, it's the emotions one experiences in teaching that facilitate learning. Student tutors feel upset when their teachable agents fail, but happy when these virtual pupils succeed as they derive pride and satisfaction from someone else's accomplishment. 1. What are researchers rediscovering through their studies？ A.Seneca's thinking is still applicable today. B.Better learners will become better teachers. C.Human intelligence tends to grow with age. D.Philosophical thinking improves instruction.

A、Seneca's thinking is still applicable today.

B、Better learners will become better teachers.

C、Human intelligence tends to grow with age.

D、Philosophical thinking improves instruction.

A.are not many

B.are not much

C.is not many

D.is not much