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Why did one scientist expose birds to artificial daylight？A．To test the relationship betwe

Why did one scientist expose birds to artificial daylight？

A．To test the relationship between daylight and a disease of the glands common to birds.

B．To test the relationship between daylight and migration.

C．To test the relationship between migration and temperature.

D．To test the relationship between daylight and changes in the season.

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更多“Why did one scientist expose b…”相关的问题

第1题

Why did you choose that one ____？

A. for particular

B. in particular

C. on particular

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第2题

Speaker A: Did you check your e-mail today？Speaker B: No. （)？

A.Who cares

B.Why do you ask

C.Which one

D.Why is it so

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第3题

Why did the professor study the Brazilian students' behavior？ A. He felt puzzled

Why did the professor study the Brazilian students' behavior？

A. He felt puzzled at the students' being late.

B. He felt angry at the students' rudeness.

C. He wanted to make the students come on time later.

D. He wanted to collect data for one of his studies.

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第4题

Why did the student transfer to Central University？

A．To take advantage of an academic program

B．To participate in a student exchange program

C．To attend a smaller university than the one he was at before

D．To benefit from Central University ’s international reputation．

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第5题

请听录音两遍并回答以下问题。在答题区域回答问题时，请在每题的答案前标清题号。（1) Why did Sarah prefer her new job to the old one？（2) Which type of animal is 'Comma'？（3) What was the storyteller's view of Comma's treatment cost？（4) Mrs. Harrison, the owner of Comma, believed that the price for Comma's cure, being several times the cost of penicillin, was justified, why？（5) How did Sarah perceive the treatment course for Comma？（6) Why was Comma's disease unexpected？

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第6题

请听录音两遍并回答以下问题。在答题区域回答问题时，请在每题的答案前标清题号。（1) What are the advantages of Sarah's new job in comparison with her old one？（2) Comma, the animal treated by Sarah, what is it？（3) Why did Mrs. Harrison think that the price for Comma's cure was fair？（4) What was Sarah's perception of Comma's treatment course？（5) The disease that Comma was suffering from was surprising, why？（6) How did the storyteller like the treatment cost for Comma？

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第7题

Why did the host invite guests who had not known one another to the dinner？

A、The host wanted to surprise everyone.

B、The host was keen on meeting different persons.

C、The host tried to make many friends at one time.

D、Because he thought these people had plenty in common.

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第8题

Why did the agent take a picture of one of the women at the brief moment she faced his direction？

A．Because he knew one of the two women and wanted to take a picture of her．

B．Because that was one of the few exciting things in his joB

C．Because he was well-trained as a secret agent．

D．Because he was so bored and wanted to entertain himsel

F．

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第9题

One mightreasonably ask why the hydrogen molecule and chlorine molecule react at all.Have

we not just explained that themselves were formed to provide a more stablearrangement of electrons Yes, indeed, we did say that. But there is stable andthere more stable. The chlorine molecule represents a more stable arrangementthan separate chlorine atoms, but, given the opportunity, a chlorine atom wouldrather bond to hydrogen than to another chlorine atom.

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第10题

Ballpoint pens have made life easier for millions of people. At one time__1__did not like their students to__2__with pen. Perhaps it was because pens can leak and it is__3__to spill the ink. And it is hard to write on thin or cheap paper with them.

Ladislao Biro__4__for a newspaper in Budapest. He spent all day__5__his desk. Day in and day out, he corrected__6__of thin, cheap paper with a pen and ink. He often had to stop to__7__his pen and it did not write__8__on the thin paper. He and his brother George__9__some experiments. They wanted a pen that did not leak,with ink that did not spill. Why not__10__a little ball at the end?

A.factories

B.schools

C.shops

D.restaurants

A.play

B.write

C.come

D.meet

A.easy

B.hard

C.free

D.popular