Of all the wild dogs, none is more closely related to the （ ） dog than to the wolf.
A.domesticated B.barking C.lazy D.running
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Of all the wild dogs, none is more closely related to the （ ） dog than to the wolf.
You can't count on him; he's liable to____________out when things become difficult.
Although we decorated the room only six months ago, the paint on the ceiling is already ____ because of the damp.
1.The author mentions all the following natural phenomena that help animals navigate EXCEPT （）.2.What makes it necessary for a bird to rely on a magnetic compass when navigating?3.According to the passage what information does the dance of the scout bee communicate to the other worker bees?4.What enables the bees to fly by the sun even though the sun’s position is not fixed?
'>Researchers have found that migrating animals use a variety of inner compasses to help them navigate. Some direct themselves by the position of the sun. Others navigate by the stars. Some use the sun as their guide during the day, and then switch tn star navigation by night. One study shows that the homing pigeon uses the Earth's magnetic fields as a guide in finding its way home, and there are indications that various other animals, from insects to mollusks, can also make use of magnetic compasses. It is of course very useful for a migrating bird to be able to switch to a magnetic compass when clouds cover the sun; otherwise it would just have to land and wait for the sun to come out again.Even with the sun or stars to guide by, the problems of navigation are more complicated than they might seem at first. For example, a worker honeybee that has found a rich source of nectar and pollen flies rapidly home to report. A scientist has discovered that the bee sent out to look for food delivers her report through a complicated dance to the other workers not only how far away the food is, but also what direction to fly in relation to the sun. But the sun does not stay in one place all day. As the workers start out to gather the toed, the sun may already have changed its position in the sky somewhat. In later trips during the day, the sun will seem to move farther and farther toward the west. Yet the worker bee seem to have no trouble at all in finding the food source. Their inner clocks tell them just where the sun will be, and they change their course correspondingly.
1.The author mentions all the following natural phenomena that help animals navigate EXCEPT （）.2.What makes it necessary for a bird to rely on a magnetic compass when navigating?3.According to the passage what information does the dance of the scout bee communicate to the other worker bees?4.What enables the bees to fly by the sun even though the sun’s position is not fixed?
A.the sun B.the stars C.magnetic fields D.wind direction问题2： A.The possibility of bad weather B.The constant motion of the sun. C.Its patterns of migration. D.Its need to constantly change homes.问题3： A.The time of the day. B.What the weather is like. C.How far away the food is. D.Which flowers the scout has found.问题4： A.They are equipped with biolWhen he was so far out that he could look back not only on the little bay but past the stretch of rock that was between it and the seashore, he floated on the warm surface and looked for his mother. There she was a little yellow dot under an umbrella that looked like a piece of orange-skin. He swain back to shore, relieved at being sure she was there, but all at once very lonely.On the other side of the bay was a loose scattering of rocks. Shove them, some boys were stripping off their clothes. They came running, their bodies bare down to the rocks Jerry swam towards them and kept his distance a little way off. They were off that coast, all of them burned smooch dark brown and speaking a language he did not understand. To be with them, of them was a feeling that filled his whole body. He swam a little closer, they turned and watched him with narrowed, attentive dark cues. Then one smiled and waved. It was enough. In a minute he bad swum in and was on the rocks beside them, smiling with extreme nervousness. They shouted cheerful greetings at him, and then, as he preserved his nervous, puzzled a mile. They understood that he was a foreigner who had wandered from his own part of the sands, and they promptly forgot him. But he was happy. He was with them.They began diving again and again from a high point into a well of blue sea between rough, pointed rocks. After they had dived and come up, they swam round pulled themselves up, and wailed their turn to dive again. They were big boys-men to Jerry. He dived and they watched him, and when he swam round to lake his place, they made way for him. He felt he was accepted, and he dived again, carefully, proud of himself.Soon the biggest of the boys balanced himself, shot down into the water, and did not come up. The others stood about watching Jerry, after waiting for the smooth brown head to appear, let out a cry of warning; they looked at him idly and turned their eyes back towards the water. After a long lime, the boy came upon the other side of a big dark rock, letting the air escape suddenly from his lungs with much coughing and spiting, and giving a shout of satisfaction. Immediately, the rest of them dived in. One moment the morning seemed full of boys as noisy as crowd of monkeys, the next, the air and the surface of the water were empty. But through the heavy blue, dark shapes could be seen moving and searching.Jerry dived, shot past the school of underwater swimmers, saw a black wall of rock towering over him touched it, and shop up at once to the surface, where the rock formed a low wall be could tee across. There was no one in sight; under him, in the water, the shadowy shapes of the swimmers has disappeared. Then one and then another of the boys came up on the far side of the wall of rock, and he understood that they had swum through some gap or hole in it. He dived down again. He could see nothing through the stinging salt water but the solid rock. When he came up, the boys were all on the diving rock, preparing to attempt the track again. And now, overcome with a sense of failure, be shouted up in English: “Look at me !’’ and he began splashing and kicking in the water like a foolish dog.
1.It can be concluded from the passage that___.2.The word “bare” in Paragraph 2 means .3.At the beginning, Jerry was swimming______.4.What happened to the biggest boy?5.Jerry splashed and kicked in the water because____.
A.Jerry was not a good swimmer B.Jerry failed to gain acceptance by the other boys C.Jerry was on holiday abroad D.Jerry was not on good terms with his mother问题2： A.in disguise B.in the limelight C.in the gutter D.in the raw问题3： A.into the little bay B.too far out to see his mother C.near to the group of boys D.further out to see than the rock问题4： A.He had been trying to stay under water as long as possible. B.He had swum though a hole in the rock under the water. C.He had been trying to do the highest dive. D.He had played a trick on Jerry.问题5： A.he was pretending to be dropping B.he wanted to amuse all the other boys C.he hadn’t been able toIn a coal-mining area the land tends to _____causing damage to roads and buildings.