单选题—Sorry to bother you. This is the fifth floor, isn’t it? —Yes, it is. Where ____ ?

单选题1. Needed: Full-time secretary position open Applicants (申请人) should have at least 2 years' experience. Apply in person at United Business Ltd, 17 Browning Street. 2. Are you looking for a part-time job? We require three part-time shop assistants to work during the evenings. No experience required. Applicants should be between 18 and 26. Call 366—76564 for more information. 3. Computer trained secretaries Do you have experience working with computers? Would you like a full-time position working in an exciting new company? If your answer is yes, give us a call at 457—896754. 4. Teacher Needed Tommy's Kindergarten (幼儿园) needs two teachers to help with classes from 9 a.m. to 3 p.m. Applicants should have proper licenses (许可证). For more information, visit Tommy's Kindergarten in No. 56, Leicester Square. 5. University positions open The University of Cumberland is looking for four teaching assistants to help with homework correction. Applicants should have a degree in one of the following: Political Science, Religion, Economics or History. Please contact (与…联系) the University of Cumberland for more information.

单选题--I usually go to Cambridge by train. --Why not ______ by coach for a change?[A] trying to go[B] to try going[C] try going[D] to try to go

单选题Whatisthewomangoingtodothisafternoon?

单选题What's done is done. It's no use ______ anyone for it.

单选题How _______within such a short period of time?

单选题

单选题The stone crosses in Amp Hill were built ______.

单选题From the passage we know that the author is a(n) ______.

单选题Dr. Marcy thinks that life may exist in the 55 Cancri system because ______.

单选题--Dose Tom do his new job well?-- ______ his old job. How stupid! I think there is no hope for him.

单选题If it were only necessary to decide whether to teach elementary science to everyone on a mass basis or to find the gifted few and take them as far as they can go, our task would be fairly simple. The public school system, however, has no such choice, for the two jobs must be carried on at the same time. Because we depend so heavily upon science and technology for our progress, we must produce specialists in many fields. Because we live in a democratic nation, whose citizens make the policies for the nation, large numbers of us must be educated to understand, to support, and when necessary, to judge the work of experts. The public school must educate both producers and users of scientific services. In education there should be a good balance among the branches of knowledge that contribute to effective thinking and wise judgement. Such balance is defeated by too much emphasis on any one field. This question of balance involves not only the relation of the natural sciences, the social sciences, and the arts but also relative emphasis among the natural sciences themselves. Similarly, we must have a balance between the current and classical knowledge. The attention of the public is continually drawn to new possibilities in scientific fields and the discovery of new knowledge; these should not be allowed to turn our attention away from the sound, established materials that form the basis of courses for beginners.

单选题In the summer of 1978 an English farmer was driving his tractor through a field of wheat when he discovered that some of his wheat was lying flat on the ground. The flattened wheat formed a circle about six meters across. Around this circle were four smaller circles of flattened wheat. The five circles were in a formation like five dots. During the following years, farmers in England found the strange circles in their fields more and more often. The circles are called "crop circles" because they appear in the fields of grain--usually wheat or corn. The grain in the circles lies flat on the ground but is never broken; it continues to grow, and farmers can later harvest it. Farmers always discover the crop circles in the morning, so the circles probably form at night. They appear only in the months from May to September. At first, people thought that the circles were a hoax. Probably young people were making them as a joke, or farmers were making them to attract tourists. To prove that the circles were a hoax, people tried to make circles exactly like the ones that farmers had found. They couldn't do it. They couldn't enter a field of grain without leaving tracks, and they couldn't flatten the grain without breaking it. Many people believe that beings from outer space are making the circles to communicate with us from far away and that the crop circles are messages from them. Scientists who have studied the crop circles suggested several possibilities. Some scientists say that a downward rush of wind leads to the formation of the circles--the same downward rush of air sometimes causes the airplane to crash. Other scientists say that forces within the earth cause the circles to appear. There is one problem with all these scientific explanations: Crop circles often appear in formations, like the five-dot formation. It is hard to believe that any natural force could form those.

单选题You ______ have brought your DV, They all had theirs with them. A.couldn't B.needn't C.wouldn't D.mustn't

单选题My present job is ______ too much of my study time.