单选题The more he encouraged the boy, __
单选题I am unable to __ what he is saying.
单选题Some of the world’s best mountain scenery __ available near the Southern Alps.
单选题About nine men in every hundred 61 from color blindness in some way; women are luckier—only about one in two hundred is affected in this manner. Perhaps, after all, it is safer to be driven by a woman. There are different forms of color blindness. In some cases, a man may not be able to see deep red. He may think that red, orange and yellow are shades of green. Sometimes a person cannot 62 the difference between blue and green. In 63 cases, an unlucky man may see everything in shades of green--a 64 world indeed. Sometimes color blindness can be dangerous. For example, when in the forest 65 soldiers use 66 to signal to 67. A green light may mean" 68 "and a 69 light may mean "Danger, keep back." You can seen what will 70 if somebody thinks that is green.
单选题The bees __ out of their hive.
单选题He felt a bit ___ because her life seemed completely out of balance.
单选题When pessimists __ in their first attempt, they usually say, "I can't do this."
单选题I will leave him a note __ he will know where we are.
单选题The man __ that most poets and scientists are male.
单选题If things are going badly, the optimist acts quickly, looking for __ and forming a new plan of action.
单选题If all the continents and mountains were bulldozed flat, the earth __ covered by water.
单选题Sales-promotion methods, to be effective, should be ___ with local preference.
单选题Geologists, __ some nongeologists, believe that knowledge of the concepts of geology can help to find petroleum.
单选题It seems oil _______ from this pipe for some time. We'll have to take machine apart to put it right.
单选题Anyone who refuses too often to listen to the other side of a question risks becoming __ minded.
单选题So frightened __ in darkness that she did not dare to move an inch.
单选题At he beginning of the Games in the host country __
单选题The passage implies that cellulose is a very porous substance because it contains ____
单选题According to the article, a document signed with a pencil __
单选题I raced to_______ Jill.