单选题A bilingual secretary ( Line 4, paragraph 3 ) differs from other secretaries in that he or she can ________.

单选题We ______ this recorder for five hundred yuan.

单选题At the meeting a decision was made______a hospital in this new area.

单选题As a matter of fact, ______.

单选题Which is ______ country, Canada or Australia? A. a large B. larger C. a larger D. the larger

单选题Before a new type of airplane goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others. The first is called the "tank test". A modern airplane must fly very high in the sky. Air must be pumped into the plane so that the passengers can breathe. The metal structure (结构)of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure (压力) on a small window is like a huge foot that is trying to get out. If a small part of the plane were to fail, the plane would explode in the sky. To test the structure of the plane, the plane is lowered into a huge tank or container of water. Then it is filled with air. The pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere else. Engineers can discover which part of the plane has broken. Then that part is made stronger. The most dangerous test happens when the new plane is going through test flights in the air. The test pilot must find out exactly what happens when the engines (发动机) are all shut off at once. The plane begins to fall like a stone. It is the pilot"s job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they ever carry passengers.

单选题He ______people with less knowledge than he has.

单选题[此试题无题干]

单选题While all the passengers made for the exit, he alone remained in his seat, as if______to leave the plane.

单选题Rose asked her elder sister, "Why is ______ mother out of work?" A./ B.the C.our D.a

单选题The use of cars is becoming more and more popular in the twentieth century. A large number of the world's population is now able to buy and use a car. Having a car gives much mobility (活动余地), enabling the driver to move around freely. The owner of a car is no longer forced to depend on public transport (交通) and do not, therefore, have to work in a place near his home. Instead, he can choose from a greater variety of jobs and he could change his job frequently. Travelling to work by car is also more comfortable than having to use public transport; the driver can use the heating (取暖设) in winter and the air conditioning in summer to meet his own need and preference. There is no discomfort caused by waiting for trains, buses or underground trains, etc. With the building of good fast motorways long distances can be covered rapidly and pleasantly. For the first time in this century also, many people are being able to enjoy their free time to the full by making trips to the country or seaside at weekends, instead of being kept in their immediate neighbourhood. This feeling of independence, and the freedom to go wherever you please, is perhaps the greatest advantage of the car.

单选题John is the only one of the staff members who ______ to be transferred.

单选题Sussex police ordered to search for a six-foot, dark-haired youth of about 20 who failed to mug (抢劫) a five-foot, 74-year-old grandmother. The youth rushed at Mrs West and tried to take her things and money when she was walking out of a church. The result should have been an expected conclusion. Surprisedly, however, when Mrs West grasped the mugger's wrist (手腕), he cried, "Oh, God! Oh, no! Stop!" Encouraged by these pleas (哀求), she put him in arm lock at which the mugger cried, "Oh, no! Oh! God!" and ran away. "If I hadn't been carrying my shopping I would really have put him on his back." said Mrs West who had practised judo (柔道) when younger. "When my husband was living. I used to pracise throwing him at Christmas," she explained.

单选题Since the middle of this century __________ has been learned about space than in all human history before that time.

单选题—Put these glasses away before they ______. —OK, I"ll put them in the cupboard.

单选题What ts Jenny going to do?

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单选题Where does the conversation most likely take place?

单选题"Motherhood may make women smarter and may help prevent dementia(痴呆) in old age by bathing the brain in protective hormones," U.S. 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 (老年痴呆症). 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."