A star that suddenly becomes several magnitudes brighter and then gradually fades is a（）.

相似题目

• A double star is a star that（）.

  A . has a declination equal to twice that of the Sun B . comprises two stars that appear close together C . is twice as bright as a single star D . suddenly becomes much brighter and then fade

  查看最佳答案

• A modem is set up for a remote TTY connection that will become the system console.  How should one verify that the console is enabled as the system console after the next reboot？（）

  A . lscons -b B . lscons -d C . lscons -s D . swcons /dev/tty0

  查看最佳答案

• A variable star is one that（）.

  A . exhibits a change in magnitude B . has a changing declination C . is increasing in SHA D . is also known as a red giant

  查看最佳答案

• Semantization means that every new word should be presented in such a way that its meaning becomes clear to the learner.（）

  A . 正确 B . 错误

  查看最佳答案

• His example（）that everyone can become a useful person in society so long as he is willing to work hard.

  A . expresses B . thinks C . indicates D . supplie

  查看最佳答案

• 4. Where to, I don’t know; but I do understand that flight has suddenly become some kind of higher necessity, some new form of life.(Para.3, L2)

  查看最佳答案

• It has now become _________ to us that a mistake has been made.

  查看最佳答案

• Make sure that you won’t let too much a good thing become something bad. 译为

  查看最佳答案

• Nostradamus was a British apothecary and reputed seer who published collections of prophecies that have since become widely famous.

  查看最佳答案

• Once your brain realizes that working time is ______, you suddenly become a lot more efficient because you have to be.

  查看最佳答案

• . The plant community ________ in a certain area becomes a food source for a community of animals _______ that area.

  查看最佳答案

• Using a telescope, Galileo discovered stars that were____to the naked eye.

  查看最佳答案

• I think that a lot of __________ have become too full of __________.

  查看最佳答案

• His temper and personally show that he can become a soldier of the top ________.

  查看最佳答案

• There&39;s a huge amount of ex______ pressure pushing him to ensure that the resolution becomes policy.

  查看最佳答案

• She believed that she was born to be a film star.

  A．meant B．supposed C．intended D．hoped

  查看最佳答案

• The common currency of the Euroland suggests that the EU is on the way to become a political integrity.

  查看最佳答案

• The young couple were so angry that they suddenly______a quarrel.

  A．broke in B．broke out C．broke into D．broke up

  查看最佳答案

• Paragraph 3 shows that a discovery claim becomes credible after it______.

  A．has attracted the attention of the general public B．has been examined by the scientific community C．has received recognition from editors and reviewers D．has been frequently quoted by peer scientists

  查看最佳答案

• His temper and personality show that he can become a soldier of the top__________．

  A.circle B.rank C.category D.grade

  查看最佳答案

• There is always a great danger that “words will ________ into things for us.”A.become

  B.harden

  查看最佳答案

• Some designers have made a proposal that glass （) not become the only material for the

  Some designers have made a proposal that glass () not become the only material for the walks of modern buildings. A.can B.may C.should D.must

  查看最佳答案

• When a speech sound changes and becomes more like another sound that follows or precedes it, it is said to be

  A．nasalized. B．voiced. C．aspirated. D．assimilated.

  查看最佳答案

• Country A is a large country that imports good-quality processed chicken from country B. Suddenly, country A’s government decides to impose a tariff on this import. Who among the following will be adv

  A．Consumers of chicken in country B．Consumers of ham in country B C．Producers of chicken in country B D．Suppliers of chicken in Country A

  查看最佳答案