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[单选题]
Not until this morning ____ that he is the last one in class to know about their math teacher’s resignation(1分)
A
he realized
B
realized he
C
did he realize
D
he did realize
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试题答案：
C
答案解释：
相关题目
22.5 Which of the following statements is true?____
22.Another thing an astronaut has to learn about is eatingin space.Food is weightless, just as men are. Food for space has to be packed in special ways.Some of it goes into tubes that a man can squeeze into his mouth.Bite-sized cookies are packed in plastic. There is a good reason for covering each bite, The plastic keeps pieces of food from traveling in the spaceship.On the earth very small pieces of food would simply fall to the floor. But gravity doesn't pull them to the floor when they are out of the plastic in a spaceship.They move here and there and can get into a man's eyes or into the spaceship's instruments.If any of the instruments is blocked, the astronauts may have trouble getting safely home. As astronauts travel on longer space trips, he must take time to sleep.An astronaut can fit himself to his seat with a kind of seat belt.Or, if he wants to, he can sleep in a sleeping bag which is fixed in place under his seat.But be careful he must put his hands under the belt when he goes to sleep.This is because he is really afraid that he might touch one of controls that isn't supposed to be touched until later.22.1 Why would astronauts cover each bite of food in space?A.Because small pieces of food would fall down to the floorB.Because weightless pieces of food might make trouble when they travel aroundC.Because they haven't enough food for longer tripsD.Because astronauts don't want to waste food
The classic novel “Gone with the Wind”, _________ we are familiar was turned into a movie.(1分)
4. A.whereas B.unless C.as D.only if
2.2Mary's pupils used elderberry juice to write with because____(1分)
____ how to operate a switchboard the graduate student had to ask the office supervisor to show him the correct procedures.
21.5 The best title of this passage can be ______.(2分)
I intended____ that year, but my mother suddenly fell ill.
24. The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he also has his place by the fireside, in the cow pasture (牧场), on the sheep range, and beside the hunter in forest or the blind. He is easy to train, works hard, and often performs wonderfully. And in the frozen polar regions he was once the principal motive power, before being largely displaced by the plane and helicopter. Because he howls (吼叫) in the presence of approaching death, the dog was once thought to have supernatural powers and believed to be capable of seeing gods and ghosts invisible to people. Actually, the basis for these beliefs lies in the dog’s sensitivity to people’s feelings and his superior hearing ability and sense of smell, which enable him to detect signs hidden from human observation. His record of saving lives is outstanding, for he often gives warnings of fire and other dangers not noticed by his master. The dog’s major contribution, however, has been to medical research. Both his food and his structure are comparable to those of human beings, and so he has been the subject of countless demonstrations and experiments. Open-heart operation has been made possible largely because of the dog. But his sacrifice has repaid his own species as well by safeguarding it from rabies (狂犬病), and other serious diseases.(10分)24.1 Which of the following is TRUE according to the passage?(2分)A. The dog is as faithful as cats in serving humans.B. The dog is much more clever in learning than the horse.C. The dog sometimes behave astonishingly and strangely.D. The dog is less useful in serving humans in the Polar Regions now.
"What languageDo the people speak here?" "IBelieve that French____ here.
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