单选题How many artists' paintings are on show at the special exhibition?
单选题Several passages were found ______ when the book ______ me.
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单选题I don't know whether you happen ______, but I'm going to study in the U. S. A. this September.
单选题Where did Mary go?
单选题In order to continue to learn by ourselves when we have left school, we must ______ learn how to study in the school now.
单选题So excited and joyful ______ that we were soon completely lost in playing and laughing.[A] we felt[B] felt we[C] did we feel[D] had we felt
单选题Wheredoesthisconversationmostprobablytakeplace?
单选题-- Are we supposed to take off our shoes before we enter? -- No, you ______.
单选题What a great weight the mother felt ______ her mind the moment she found her lost son! A. turned off B. taken off C. set free D. brought into
单选题I enjoyed reading the story by Sarah Peterson. It was rather sad, ______.
单选题The traffic was very heavy, ______ I would have been here half an hour sooner.[A] however[B] otherwise[C] anyway[D] although
单选题WhenshouldJanegotoseeProfessorWhite?
单选题Whatdoesthewomanwantthemantodo?
单选题I was very disappointed not to be able to go to the jazz (爵士乐) concert last Friday. The advertisement (广告) in the paper said that you could buy tickets at the theatre box in Richland Hills any day be- tween 10:00 and 4:00. Since I work from 9:00 to 5:00, the only time I could go to the theatre was during my 45 minutes lunch break. Unfortunately, the theatre is on the other side of the town, and the bus service between my office and Richland Hills is not very good. But if you are lucky (幸运的) , you can make the round trip in 45 minutes. Last Monday, I stood at the bus stop for fifteen minutes wait- ing the bus. By the time I saw one come around the corner, there was not enough time left to make the trip. So I gave up and went back to the office. The same thing happened on Tuesday, and again the next day. On Thursday, my luck changed. I got on a bus right away and arrived at the theatre in exactly twenty minutes. When I got there, however, I found a long line of people at the box office. I heard one man say he had been waiting in line for over an hour. Realizing I would not have enough time to wait in line, I caught the next bus and headed back across the town. By Friday I realized my only hope was to make the trip by taxi, it was expensive, but I felt it would be worth it to hear the concert. The trip by taxi only took 10 minutes, but it felt like an hour to me. When I got to the theatre, I was relieved to see that nobody was waiting in line. The reason, however, I quickly dis- covered, was that they had already sold all the tickets.
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单选题-- Why do you think he is a liar? -- We have proved ______ many times.
单选题{{B}}C{{/B}}
Trees have a spectacular survival
record. Over a period of more than 400 million years, they have evolved as the
tallest, most massive, and longest-lived organisms ever to inhabit the Earth.
Yet trees lack a means of defense that almost every animal has: trees cannot
move away from destructive forces. Because they cannot move, all types of
living and nonliving enemies—fire, storms, microorganisms, insects, other
animals and, later, humans—have wounded them throughout their
history. Trees have survived, because their evolution has made them into highly
compartmented organisms. In that respect trees are radically
different from animals. Fundamentally, animals heal: they preserve their life by
making billions of repairs, installing new cells or rejuvenated cells in the
positions of old ones. Trees cannot heal: they make no repairs. Instead, they
defend themselves from the consequences of injury and infection by walling
offthe damage. At the same time they put new cells in new positions; in
effect, they grow a new tree over the old one every year. The most obvious
results of the process are growth rings, which are visible on the cross section
of a trunk, a root, to a branch.
单选题______ by the beauty of nature, the girl from London decided to spend another two days on the farm.
单选题Mary always dances well, ______ her mother.