下面表达准确、没有语病的一句是( )
A.臭氧在大气中的比例很少，只占空气的四百万分之一。
B人们被老人那清晰的思路、乐观的情绪和坚定的信心感染了。
C.固体在液体里是沉还是浮，决定于浮力比固体的重量大呢，还是小。
D.由“应试教育”向素质教育转轨是当前我国基础教育改革的重要任务。
答案：D
A项主谓不当，比例不能论多少，只能论大小；B项“思路”、“信心”与“感染”搭配不当；C项结构混乱，可将“浮”、“沉” 换位。
| 用方框中所给词或短语的适当形式填空。（方框中有两个是多余的） | |
food. Some are good 3 0ur health, and some are bad for our health. What's good food? Here is a food pyramid (金字塔). Every day, we should eat much bread and rice; we should eat some vegetables _4 fruit, maybe two apples or three oranges. A lot of bread, rice, vegetables and fruit help you _5 in good health. We should have one glass or two glasses of milk and less fish, meat, chicken 6 eggs. Of course, we should 7 eat junk food. 8 sweets and cola are very delicious, we can't often eat 9 . They're 10 food. | |
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