A.no food is free from pollution in the environment
B.pesticides are widely used in agriculture
C.many vegetables contain dangerous natural chemicals
D.almost all foods have additives
单选题 | A budget of five dollars a day is totally ________ for a trip round Europe. | 查看答案 |
单选题 | During the construction of skyscrapers, cranes are used to ________ building materials to the upper floors. | 查看答案 |
单选题 | If the world is to remain peaceful the utmost effort must be made by nations to limit local ________. | 查看答案 |
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单选题 | What have the two French geophysicists discovered in their research? | 查看答案 |
单选题 | It is very strange but I had an ________ that the plane would crash. | 查看答案 |
单选题 | According to the passage, people’s learning activities are possible because they ________. | 查看答案 |
单选题 | The basic causes are unknown, although certain conditions that may lead to cancer have been ________. | 查看答案 |
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单选题 | John said that he didn’t quite ________ and asked me to repeat what I had said. | 查看答案 |
单选题 | They have always regarded a man of ________ and fairness as a reliable friend. | 查看答案 |
单选题 | They stood gazing at the happy ________ of children playing in the park. | 查看答案 |
单选题 | One of the reasons for the current crisis in American colleges and universities is that ________. | 查看答案 |
单选题 | American colleges and universities failed to graduate half of their four-year degree candidates because ________. | 查看答案 |
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单选题 | In the past ten years skyscrapers have developed ________ in Chicago and New York City. | 查看答案 |
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单选题 | In Peter Oslo’s opinion the French experiment ________. | 查看答案 |
单选题 | An obvious change of attitude at the top towards women’s status in society will ________ through the current law system in Japan. | 查看答案 |