单选题WhoissmokingaFrenchcigarette?

单选题Now ______ of students has reduced because ______ of students have graduated recently.

单选题

单选题Too bad I missed the early train ______ only a few minutes! A. by B. in C. at D. after

单选题 听下面5段对等方面或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前， 你将有5秒钟的时间阅读各个小题。听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。

单选题Whichagegroupdothetwospeakersmostlikelybelongto?

单选题They show no ______ in this topic.

单选题Weretherealotofpeopleatthelecture?A.Yes,therewasabigaudience.B.No,onlyone-thirdoftheseatswereoccupied.C.Yes,buynearly30%leftaftertheshortrest.

单选题—When shall we meet again? —Make it ______ day you like; it's all the same to me.[A] one[B] any[C] some[D] another

单选题 阅读下列短文，从每题所给的四个选项(A、B、C和D)中选出最佳选项。{{B}}A{{/B}} "Motherhood may make women smarter and may help prevent dementia(痴呆) in old age by bathing the brain in protective hormones," US researchers reported on Thursday. Tests on rats show that those who raise two or more litters of pups do considerably better in tests of memory and skills than rats who have no babies, and their brains show changes that suggest they may be protected against diseases such as Alzheimer's dementia (早老痴呆症). University of Richmond psychology professor Craig Kinsley believes his findings will translate into humans. "Our research shows that the hormones of pregnancy (怀孕) are protecting the brain, including estrogen (雌激素), which we know has many neuroprotective (保护神经的) effects," Kinsley said. "It's rat data but humans are mammals just like these animals are mammals," he added in a telephone interview. "They go through pregnancy and hormonal changes." Kinsley said he hoped public health officials and researchers would look to see if having had children protected a woman from Alzheimer's dementia and other forms of age-related brain decline. "When people think about pregnancy, they think about what happens to the baby and the mother from the neck down," said Kinsley, who presented his findings to the annual meeting of the Society of Neuroscience in Orlando, Florida. "They do not realize that hormones are washing on the brain. If you look at female animals who have never gone through pregnancy, they act differently to the young. But if she goes through pregnancy, she will sacrifice her life for her infant--that is a great change in her behavior that shows the genetic alterations(改变) to the brain. "

单选题What troubles Tina and Mark most is that ______.

单选题Something was wrong with the engine of the plane. The pilot had to make[A] a forced land[B] a forced landing[C] forced land[D] forced landing

单选题He is______a writer.

单选题It was 12 o'clock already. Mr. Wang suggested ______. A. we brought the meeting to an end B. we bring the meeting to an end C. us bring the meeting to an end D. us to bring the meeting to an end

单选题From the passage, we know that the advantages of the system might be ______.